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.opencode/skills/ai-artist/references/image-prompting.md

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+# Image Generation Prompting
+
+## Universal Structure
+```
+[Subject + Details] [Action/Pose] [Setting/Environment]
+[Style/Medium] [Artist/Movement Reference]
+[Lighting] [Camera/Lens] [Composition]
+[Quality Modifiers] [Aspect Ratio]
+```
+
+## Platform Reference
+
+### Midjourney v6.1
+```
+[prompt] --ar 16:9 --style raw --v 6.1
+```
+
+| Parameter | Values | Effect |
+|-----------|--------|--------|
+| `--ar` | 1:1, 16:9, 9:16, 4:3, 3:2, 21:9 | Aspect ratio |
+| `--style` | raw, default | raw=photorealistic |
+| `--stylize` | 0-1000 | Artistic interpretation (0=literal) |
+| `--chaos` | 0-100 | Variation between outputs |
+| `--weird` | 0-3000 | Unusual/experimental elements |
+| `--quality` | .25, .5, 1, 2 | Detail level (cost) |
+| `--seed` | number | Reproducibility |
+| `--no` | [term] | Negative prompt inline |
+| `--tile` | - | Seamless patterns |
+
+**Multi-prompt weighting**: `cat::2 dog::1` (cat 2x stronger)
+**Describe**: Upload image → get prompt suggestions
+**Blend**: `/blend` to merge 2-5 images
+
+### DALL-E 3
+- Natural language only, no parameters
+- Be descriptive, not keyword-heavy
+- Specify: "HD quality" or "vivid style" in prompt
+- Text rendering: Describe font, placement, content explicitly
+- Avoid: Lists of keywords, technical jargon
+
+### Stable Diffusion / SDXL / Flux
+```
+(important term:1.3), normal term, (less important:0.8)
+Negative prompt: ugly, blurry, deformed, watermark
+```
+
+| Feature | Syntax |
+|---------|--------|
+| Weight up | `(word:1.2)` to `(word:1.5)` |
+| Weight down | `(word:0.5)` to `(word:0.8)` |
+| LoRA | `<lora:model_name:0.8>` |
+| Embedding | `embedding:name` |
+| Blend | `[cat|dog]` alternating |
+
+**CFG Scale**: 7-12 typical (higher=more prompt adherence)
+**Samplers**: DPM++ 2M Karras (quality), Euler a (speed)
+
+### Nano Banana (Gemini)
+```
+[Narrative description, not keywords]
+Captured with 85mm lens, soft bokeh, natural lighting
+```
+
+**Key features**:
+- 32K token context (complex prompts OK)
+- Narrative paragraphs > keyword lists
+- Hex colors for precision: `#9F2B68`
+- Text rendering: Describe font, placement explicitly
+- Multi-image: Up to 14 reference images
+- Search grounding: Real-time data (weather, events)
+- Thinking mode: Complex composition reasoning
+
+**Aspect ratios**: 1:1, 2:3, 3:2, 3:4, 4:3, 4:5, 5:4, 9:16, 16:9, 21:9
+**Resolution**: 1K, 2K, 4K (use uppercase K)
+
+**Best practices**:
+- ALL CAPS for critical requirements
+- Markdown lists for multiple rules
+- "NEVER include..." for negative constraints
+- Photography terms anchor quality
+
+### Imagen 4 / Veo 3.1
+- Natural language, descriptive
+- Aspect ratio in text: "16:9 landscape format"
+- Veo: Cinematography keywords most powerful
+- Camera movements: pan, tilt, dolly, crane, tracking
+- Scene transitions: cut, fade, dissolve
+
+## Style Keywords
+
+### Art Movements
+photorealistic, hyperrealistic, impressionist, expressionist,
+surrealist, art nouveau, art deco, pop art, cyberpunk, steampunk,
+solarpunk, vaporwave, synthwave, brutalist, minimalist
+
+### Media Types
+oil painting, watercolor, digital art, 3D render, vector art,
+pencil sketch, ink drawing, pastel, charcoal, gouache, fresco
+
+### Photography Styles
+portrait, landscape, macro, street, documentary, fashion,
+editorial, product, architectural, aerial, underwater
+
+## Lighting Vocabulary
+
+| Term | Effect |
+|------|--------|
+| Golden hour | Warm, soft, directional |
+| Blue hour | Cool, moody, twilight |
+| Rembrandt | Triangle on cheek, dramatic |
+| Butterfly | Shadow under nose, glamorous |
+| Split | Half face lit, mysterious |
+| Rim/back | Edge highlight, separation |
+| Volumetric | Light rays visible |
+| Neon glow | Colorful, cyberpunk |
+
+## Camera/Lens Terms
+- 50mm (standard), 85mm (portrait), 35mm (wide)
+- Telephoto (compressed), Macro (close-up), Fisheye (distorted)
+- Shallow DOF, Deep DOF, Bokeh
+- Low angle, High angle, Dutch angle, Bird's eye, Worm's eye
+
+## Composition Keywords
+rule of thirds, golden ratio, centered, symmetrical,
+leading lines, framing, negative space, filling frame,
+foreground interest, layered depth
+
+## Negative Prompts (SD/Flux)
+```
+ugly, deformed, blurry, low quality, bad anatomy,
+extra limbs, missing limbs, disfigured, watermark,
+text, signature, cropped, out of frame, duplicate,
+poorly drawn, bad proportions, gross proportions
+```
+
+## Iterative Workflow
+1. Start: Subject + style + quality modifier
+2. Add: Lighting + composition + camera
+3. Test: Generate 4 variations
+4. Refine: Adjust weights, add negatives
+5. Upscale: Select winner, increase resolution