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 applying the marathon finish transformation. Keep the person's recognizable identity completely intact.

TRANSFORMATION DESCRIPTION: Transform the person to appear as if they have just completed a marathon. Apply realistic post-race appearance including: visible sweat on forehead and upper lip, slightly flushed skin from exertion, natural disheveled hair (as if from running), heavy breathing expression with parted lips, and athletic running attire (moisture-wicking shirt, running shorts, or leggings). The expression should show exhaustion mixed with accomplishment - tired eyes but a hint of satisfaction. Make the transformation look natural and authentic to the person's appearance.

STYLE AND AESTHETIC PARAMETERS:
- Photorealistic style with natural skin texture and pores visible
- Cinematic lighting with golden hour or natural outdoor lighting
- Sweat should appear realistic with proper highlights and reflections
- Athletic clothing should match current sportswear trends (breathable fabrics, modern cuts)
- Background should suggest a marathon finish line area or race environment
- Color palette: natural skin tones with slight redness from exertion, vibrant athletic wear colors
- Keep facial expression tired but proud, not overly dramatic
- Hair should look windblown and slightly sweaty, not wet

TECHNICAL QUALITY PARAMETERS:
- High resolution, 4K, detailed
- Sharp focus on face and key details (sweat, expression)
- Professional quality portrait
- Aspect ratio: 4:3 or 1:1 (suitable for social media)
- Natural depth of field with face in sharp focus
- Maintain high detail in skin texture and fabric materials

NEGATIVE PROMPT GUIDANCE: Avoid: distorted facial features, unrealistic proportions, blurry face, loss of likeness, exaggerated expressions, cartoonish appearance, low quality, pixelation, unnatural skin texture, makeup that looks artificial, overly dramatic lighting, blood or injury, wounds, damage to skin, unrealistic sweat (too much or too little), clothing that looks fake or poorly rendered.

USER CUSTOMIZATION: {additional_context}

ADDITIONAL TIPS:
- For best results, use a clear, front-facing photo with good lighting
- If your original photo already has specific lighting, mention it in additional_context
- You can specify preferred athletic wear colors or style in additional_context
- Mention if you want a specific marathon environment (urban, park, stadium) in additional_context
- The prompt works best with photos where the face is clearly visible and not obscured