From giulioco-skills
Craft highly effective prompts for Nano Banana Pro (Gemini image generation). Use when generating images with Nano Banana Pro for any purpose including photorealistic portraits, product photography, creative experiments, e-commerce mockups, social media content, editorial layouts, 3D renders, era-specific aesthetics (Y2K, 2000s, 1990s), miniature/diorama effects, or any advanced image generation task. Provides proven prompt patterns, technical specifications, JSON structuring, identity preservation techniques, and style-specific templates.
npx claudepluginhub joshuarweaver/cascade-content-creation-misc-1 --plugin giulioco-skillsThis skill uses the workspace's default tool permissions.
Nano Banana Pro excels at:
Generates design tokens/docs from CSS/Tailwind/styled-components codebases, audits visual consistency across 10 dimensions, detects AI slop in UI.
Records polished WebM UI demo videos of web apps using Playwright with cursor overlay, natural pacing, and three-phase scripting. Activates for demo, walkthrough, screen recording, or tutorial requests.
Delivers idiomatic Kotlin patterns for null safety, immutability, sealed classes, coroutines, Flows, extensions, DSL builders, and Gradle DSL. Use when writing, reviewing, refactoring, or designing Kotlin code.
Nano Banana Pro excels at:
Key success factors:
Choose your approach based on the task:
When to use: Single subject, straightforward composition, basic style transfer
Pattern:
[Style/mood] + [Subject description] + [Environment] + [Technical specs] + [Quality markers]
Example:
A professional, high-resolution profile photo, maintaining exact facial features of the uploaded image.
Shot from chest up with ample headroom, looking directly at camera. Smart casual blazer in charcoal gray.
Solid neutral studio background (#562226). Bright airy lighting with catchlights in eyes.
85mm f/1.8 lens, shallow depth of field, crisp focus on eyes, soft bokeh.
Clean cinematic color grading with subtle warmth.
When to use: Complex scenes, multiple elements, precise control, era-specific aesthetics
When JSON is essential:
See JSON Structure Guide for templates.
When to use: Moderate complexity, some technical precision needed
Combine narrative description with key technical specs in structured sections.
When maintaining facial features from a reference image:
Critical phrases:
"face": { "preserve_original": true, "reference_match": true }Additional requirements:
Example:
Keep the facial features of the person in the uploaded image exactly consistent.
Dress them in a professional navy blue business suit with white shirt.
Background: Clean solid dark gray studio photography backdrop with subtle gradient.
Photography Style: Sony A7III with 85mm f/1.4 lens, flattering portrait compression.
Lighting: Three-point setup with soft key light, subtle rim light.
Render natural skin texture with visible pores. Ultra-realistic 8k professional headshot.
Adding precise technical specs dramatically improves output quality.
Use for: Professional headshots, editorial portraits, realistic scene photography
Key elements:
See Photorealism & Portraits Guide for:
Use for: 3D renders, dioramas, isometric views, surreal compositions, miniatures
Key elements:
See Creative Experiments Guide for:
Use for: E-commerce shots, product photography, brand imagery, luxury goods
Key elements:
See Product & Commercial Guide for:
Use for: Aspect ratio changes, background removal, style transfer, outpainting
Key elements:
See Editing & Transformation Guide for:
Keep the facial features exactly as in the uploaded image.
Professional [outfit description].
Background: [solid color/environment].
Photography: [Camera] with [lens], [lighting style].
[Technical details: DoF, skin texture, quality markers].
Use JSON structure. Include:
See JSON templates.
Create a [style: isometric/chibi/diorama] 3D render of [subject].
Rendered using [Cinema 4D/C4D], [material specs: glossy/matte/PVC].
[Perspective type: isometric/axonometric].
[Scale: miniature/toy-sized].
Soft studio lighting, [color palette], clean [background color] background.
Professional e-commerce product photography of [product].
Pure white background (RGB 255,255,255) with subtle contact shadow.
Soft commercial studio lighting highlighting [texture/material].
Shot on [camera] with [lens], even illumination, no harsh glare.
Sharp, color-corrected, professional retouching. High resolution.
For scenes with multiple subjects or complex interactions, use JSON to specify each element precisely. Structure sections for: subject, accessories, environment, lighting, photography, mood.
Always include negative prompts for complex requests:
{
"negative": {
"content": "multiple characters, wrong gender, messy composition, extreme angles, fisheye",
"style": "no hyper-saturation, no soft focus filters, no heavy vignetting"
}
}
When including text in images:
Example:
Glossy magazine cover, large bold words "Nano Banana Pro" in serif font, black on white.
Dynamic portrait in front of text. Issue number and date in corner, barcode, price.
For generating multiple related images:
Social Media Content:
Professional/Corporate:
E-commerce:
Creative/Artistic:
This skill includes detailed reference guides:
Load these references as needed for detailed templates and examples.