JimLiu-baoyu-skills/skills/baoyu-article-illustrator/references/prompt-construction.md

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# Prompt Construction
## Prompt File Format
Each prompt file uses YAML frontmatter + content:
```yaml
---
illustration_id: 01
type: infographic
style: blueprint
references: # ⚠️ ONLY if files EXIST in references/ directory
- ref_id: 01
filename: 01-ref-diagram.png
usage: direct # direct | style | palette
---
[Type-specific template content below...]
```
**⚠️ CRITICAL - When to include `references` field**:
| Situation | Action |
|-----------|--------|
| Reference file saved to `references/` | Include in frontmatter ✓ |
| Style extracted verbally (no file) | DO NOT include in frontmatter, append to prompt body instead |
| File path in frontmatter but file doesn't exist | ERROR - remove references field |
**Reference Usage Types** (only when file exists):
| Usage | Description | Generation Action |
|-------|-------------|-------------------|
| `direct` | Primary visual reference | Pass to `--ref` parameter |
| `style` | Style characteristics only | Describe style in prompt text |
| `palette` | Color palette extraction | Include colors in prompt |
**If no reference file but style/palette extracted verbally**, append directly to prompt body:
```
COLORS (from reference):
- Primary: #E8756D coral
- Secondary: #7ECFC0 mint
...
STYLE (from reference):
- Clean lines, minimal shadows
- Gradient backgrounds
...
```
---
## Default Composition Requirements
**Apply to ALL prompts by default**:
| Requirement | Description |
|-------------|-------------|
| **Clean composition** | Simple layouts, no visual clutter |
| **White space** | Generous margins, breathing room around elements |
| **No complex backgrounds** | Solid colors or subtle gradients only, avoid busy textures |
| **Centered or content-appropriate** | Main visual elements centered or positioned by content needs |
| **Matching graphics** | Use graphic elements that align with content theme |
| **Highlight core info** | White space draws attention to key information |
**Add to ALL prompts**:
> Clean composition with generous white space. Simple or no background. Main elements centered or positioned by content needs.
---
## Character Rendering
When depicting people:
| Guideline | Description |
|-----------|-------------|
| **Style** | Simplified cartoon silhouettes or symbolic expressions |
| **Avoid** | Realistic human portrayals, detailed faces |
| **Diversity** | Varied body types when showing multiple people |
| **Emotion** | Express through posture and simple gestures |
**Add to ALL prompts with human figures**:
> Human figures: simplified stylized silhouettes or symbolic representations, not photorealistic.
---
## Text in Illustrations
| Element | Guideline |
|---------|-----------|
| **Size** | Large, prominent, immediately readable |
| **Style** | Handwritten fonts preferred for warmth |
| **Content** | Concise keywords and core concepts only |
| **Language** | Match article language |
**Add to prompts with text**:
> Text should be large and prominent with handwritten-style fonts. Keep minimal, focus on keywords.
---
## Principles
Good prompts must include:
1. **Layout Structure First**: Describe composition, zones, flow direction
2. **Specific Data/Labels**: Use actual numbers, terms from article
3. **Visual Relationships**: How elements connect
4. **Semantic Colors**: Meaning-based color choices (red=warning, green=efficient)
5. **Style Characteristics**: Line treatment, texture, mood
6. **Aspect Ratio**: End with ratio and complexity level
## Type-Specific Templates
### Infographic
```
[Title] - Data Visualization
Layout: [grid/radial/hierarchical]
ZONES:
- Zone 1: [data point with specific values]
- Zone 2: [comparison with metrics]
- Zone 3: [summary/conclusion]
LABELS: [specific numbers, percentages, terms from article]
COLORS: [semantic color mapping]
STYLE: [style characteristics]
ASPECT: 16:9
```
**Infographic + vector-illustration**:
```
Flat vector illustration infographic. Clean black outlines on all elements.
COLORS: Cream background (#F5F0E6), Coral Red (#E07A5F), Mint Green (#81B29A), Mustard Yellow (#F2CC8F)
ELEMENTS: Geometric simplified icons, no gradients, playful decorative elements (dots, stars)
```
**Infographic + vector-illustration + warm palette**:
```
Flat vector illustration infographic. Clean black outlines on all elements.
PALETTE OVERRIDE (warm): Warm-only color palette, no cool colors.
COLORS: Soft Peach background (#FFECD2), Warm Orange (#ED8936),
Terracotta (#C05621), Golden Yellow (#F6AD55), Deep Brown (#744210)
ELEMENTS: Geometric simplified icons, no gradients, rounded corners,
modular card layout, consistent icon style
```
### Scene
```
[Title] - Atmospheric Scene
FOCAL POINT: [main subject]
ATMOSPHERE: [lighting, mood, environment]
MOOD: [emotion to convey]
COLOR TEMPERATURE: [warm/cool/neutral]
STYLE: [style characteristics]
ASPECT: 16:9
```
### Flowchart
```
[Title] - Process Flow
Layout: [left-right/top-down/circular]
STEPS:
1. [Step name] - [brief description]
2. [Step name] - [brief description]
...
CONNECTIONS: [arrow types, decision points]
STYLE: [style characteristics]
ASPECT: 16:9
```
**Flowchart + vector-illustration**:
```
Flat vector flowchart with bold arrows and geometric step containers.
COLORS: Cream background (#F5F0E6), steps in Coral/Mint/Mustard, black outlines
ELEMENTS: Rounded rectangles, thick arrows, simple icons per step
```
**Flowchart + sketch-notes + macaron palette**:
```
Hand-drawn educational flowchart on warm cream paper. Slight wobble on all lines.
PALETTE: macaron — soft pastel color blocks
COLORS: Warm Cream background (#F5F0E8), zone fills in Macaron Blue (#A8D8EA),
Lavender (#D5C6E0), Mint (#B5E5CF), Coral Red (#E8655A) for emphasis
ELEMENTS: Rounded cards with dashed/solid borders, wavy hand-drawn arrows with labels,
simple stick-figure characters, doodle decorations (stars, underlines)
STYLE: Color fills don't completely fill outlines, hand-drawn lettering, generous white space
```
### Comparison
```
[Title] - Comparison View
LEFT SIDE - [Option A]:
- [Point 1]
- [Point 2]
RIGHT SIDE - [Option B]:
- [Point 1]
- [Point 2]
DIVIDER: [visual separator]
STYLE: [style characteristics]
ASPECT: 16:9
```
**Comparison + vector-illustration**:
```
Flat vector comparison with split layout. Clear visual separation.
COLORS: Left side Coral (#E07A5F), Right side Mint (#81B29A), cream background
ELEMENTS: Bold icons, black outlines, centered divider line
```
**Comparison + vector-illustration + warm palette**:
```
Flat vector comparison with split layout. Clear visual separation.
PALETTE OVERRIDE (warm): Warm-only color palette, no cool colors.
COLORS: Left side Warm Orange (#ED8936), Right side Terracotta (#C05621),
Soft Peach background (#FFECD2), Deep Brown (#744210) accents
ELEMENTS: Bold icons, black outlines, centered divider line
```
### Framework
```
[Title] - Conceptual Framework
STRUCTURE: [hierarchical/network/matrix]
NODES:
- [Concept 1] - [role]
- [Concept 2] - [role]
RELATIONSHIPS: [how nodes connect]
STYLE: [style characteristics]
ASPECT: 16:9
```
**Framework + vector-illustration**:
```
Flat vector framework diagram with geometric nodes and bold connectors.
COLORS: Cream background (#F5F0E6), nodes in Coral/Mint/Mustard/Blue, black outlines
ELEMENTS: Rounded rectangles or circles for nodes, thick connecting lines
```
**Framework + vector-illustration + warm palette**:
```
Flat vector framework diagram with geometric nodes and bold connectors.
PALETTE OVERRIDE (warm): Warm-only color palette, no cool colors.
COLORS: Soft Peach background (#FFECD2), nodes in Warm Orange (#ED8936),
Terracotta (#C05621), Golden Yellow (#F6AD55), black outlines
ELEMENTS: Rounded rectangles or circles for nodes, thick connecting lines
```
### Timeline
```
[Title] - Chronological View
DIRECTION: [horizontal/vertical]
EVENTS:
- [Date/Period 1]: [milestone]
- [Date/Period 2]: [milestone]
MARKERS: [visual indicators]
STYLE: [style characteristics]
ASPECT: 16:9
```
### Screen-Print Style Override
When `style: screen-print`, replace standard style instructions with:
```
Screen print / silkscreen poster art. Flat color blocks, NO gradients.
COLORS: 2-5 colors maximum. [Choose from style palette or duotone pair]
TEXTURE: Halftone dot patterns, slight color layer misregistration, paper grain
COMPOSITION: Bold silhouettes, geometric framing, negative space as storytelling element
FIGURES: Silhouettes only, no detailed faces, stencil-cut edges
TYPOGRAPHY: Bold condensed sans-serif integrated into composition (not overlaid)
```
**Scene + screen-print**:
```
Conceptual poster scene. Single symbolic focal point, NOT literal illustration.
COLORS: Duotone pair (e.g., Burnt Orange #E8751A + Deep Teal #0A6E6E) on Off-Black #121212
COMPOSITION: Centered silhouette or geometric frame, 60%+ negative space
TEXTURE: Halftone dots, paper grain, slight print misregistration
```
**Comparison + screen-print**:
```
Split poster composition. Each side dominated by one color from duotone pair.
LEFT: [Color A] side with silhouette/icon for [Option A]
RIGHT: [Color B] side with silhouette/icon for [Option B]
DIVIDER: Geometric shape or negative space boundary
TEXTURE: Halftone transitions between sides
```
---
## Palette Override
When a palette is specified (via `--palette` or preset), it overrides the style's default colors:
1. Read style file → get rendering rules (Visual Elements, Style Rules, line treatment)
2. Read palette file (`palettes/<palette>.md`) → get Colors + Background
3. Palette Colors **replace** style's default Color Palette in prompt
4. Palette Background **replaces** style's Background color (keep style's texture description)
5. Build prompt: style rendering instructions + palette colors
**Prompt frontmatter** includes palette when specified:
```yaml
---
illustration_id: 01
type: infographic
style: vector-illustration
palette: macaron
---
```
**Example**: `vector-illustration` + `macaron` palette:
```
Flat vector illustration infographic. Clean black outlines on all elements.
PALETTE: macaron — soft pastel color blocks
COLORS: Warm Cream background (#F5F0E8), Macaron Blue (#A8D8EA), Mint (#B5E5CF),
Lavender (#D5C6E0), Peach (#FFD5C2), Coral Red (#E8655A) for emphasis
ELEMENTS: Geometric simplified icons, no gradients, playful decorative elements
```
When no palette is specified, use the style's built-in Color Palette as before.
---
## What to Avoid
- Vague descriptions ("a nice image")
- Literal metaphor illustrations
- Missing concrete labels/annotations
- Generic decorative elements
## Watermark Integration
If watermark enabled in preferences, append:
```
Include a subtle watermark "[content]" positioned at [position].
```