IDENTITY PRESERVATION INSTRUCTION: Using the uploaded photo as reference, preserve the person's exact facial features, face shape, eye color, skin tone, and unique characteristics while transforming the overall appearance into a Halloween costume portrait. Keep the original facial identity completely intact and recognizable.

TRANSFORMATION DESCRIPTION: Transform the person into a festive Halloween costume character. Apply appropriate costume elements such as themed clothing, accessories, face paint, or character makeup that complements their facial structure. The transformation should look like a natural fit for their face shape and personality. Options include: classic vampire with elegant dark attire, mysterious witch/wizard with mystical robes, spooky ghost costume with ethereal overlay, classic monster character, or fantasy creature with subtle facial enhancements. The costume should appear as if professionally applied and integrated with the original photo's lighting and perspective.

STYLE AND AESTHETIC PARAMETERS:
- Art style: Photorealistic portrait quality with cinematic Halloween atmosphere
- Lighting: Dramatic moody lighting with warm orange and purple accent tones, soft shadows, rim lighting for depth
- Color palette: Rich autumn colors (deep oranges, purples, blacks, dark reds) with atmospheric tones that enhance the Halloween theme while maintaining natural skin tones
- Costume texture: Realistic fabric textures, proper material sheen, natural folds and draping
- Makeup integration: Professional theatrical makeup that blends seamlessly with facial contours, subtle special effects that enhance features without distorting them
- Background: Keep original background with atmospheric overlay (subtle fog, glowing lights, autumn leaves) or replace with moody Halloween scene (pumpkin patch, haunted house exterior, dark forest with moonlight)
- Overall mood: Mysterious, festive, professional-quality costume photography

TECHNICAL QUALITY PARAMETERS:
- High resolution, 4K, detailed
- Sharp focus maintained on face and costume details
- Professional quality portrait photography standards
- Natural skin texture preserved throughout transformation
- Clean edges and seamless costume integration
- Aspect ratio: 1:1 (square) for social media profiles, or 4:5 for portrait orientation
- Detailed fabric rendering with realistic material properties

NEGATIVE PROMPT GUIDANCE: Avoid: distorted facial features, unrealistic costume proportions, blurry face, loss of facial likeness, mismatched lighting between face and costume, artificial-looking accessories, costume elements that obscure identity, poorly blended makeup, unnatural skin tones, pixelation or artifacts, disproportionate head-to-body ratio, unrealistic shadows, costume pieces that look "pasted on"

USER CUSTOMIZATION: {additional_context}

TECHNICAL TIPS FOR BEST RESULTS:
- Use high-quality source photos with clear facial visibility
- Specify preferred costume type in additional context if you have a specific character in mind
- Mention preferred background style (keep original, blur, or replace)
- Indicate if you want subtle or dramatic costume effects
- For group photos, specify which person to transform or apply to all