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 age. The core identity must remain recognizable, specifically the eye shape, nose structure, and distinctive facial geometry.

TRANSFORMATION DESCRIPTION:
Transform the adult person in the photo into a realistic childhood version (approximately 6-10 years old). Apply age regression to facial features: reduce facial structure size, soften jawline, enlarge eyes slightly relative to face, smooth skin texture, and maintain original eye color and hair color. The facial proportions should reflect a child's anatomy while keeping the person's unique genetic features. The expression should be innocent and natural, suitable for a child.

STYLE AND AESTHETIC PARAMETERS:
- Art style: Photorealistic, high-fidelity portrait photography. Natural and authentic appearance.
- Lighting conditions: Soft, warm natural lighting (like golden hour) or gentle studio lighting. Avoid harsh shadows.
- Color palette: Warm, nostalgic tones. Slightly desaturated but vibrant skin tones. Natural skin texture with softness appropriate for a child.
- Background treatment: Keep background context appropriate for childhood setting (playroom, park, simple backdrop) or maintain original background with slight adjustments for age context. Background should be slightly blurred (bokeh) to keep focus on face.
- Clothing: Suggest age-appropriate clothing (t-shirt, simple dress, casual wear) if visible, or keep original clothing with subtle adjustments for fit.

TECHNICAL QUALITY PARAMETERS:
- High resolution, 4K, detailed, professional quality
- Sharp focus on face, especially eyes
- Natural skin texture with appropriate softness for age
- Realistic hair texture with natural shine
- Professional portrait quality with depth of field
- Aspect ratio: 1:1 (square) or 4:3 (standard portrait)

NEGATIVE PROMPT GUIDANCE:
Avoid: distorted facial features, unrealistic proportions, blurry face, loss of likeness, unnatural skin smoothing, cartoonish appearance, mismatched eye color, asymmetrical face, deformed features, over-exaggerated child features, artificial-looking skin, plastic appearance, uncanny valley effect, inconsistent lighting

USER CUSTOMIZATION:
{additional_context}

ADDITIONAL TIPS:
- For best results, use a clear, front-facing adult photo with good lighting
- If the original photo has glasses, you can specify whether to keep or remove them in the additional context
- Specify desired age range (e.g., "5 years old" or "8 years old") in the additional context for more precise results