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 image into a Renaissance-era portrait. The core identity must remain completely recognizable.

TRANSFORMATION DESCRIPTION:
Transform the subject into a noble courtier from the Italian Renaissance period (circa 15th-16th century). Apply authentic period clothing including a rich velvet doublet with intricate embroidery, a high-collared ruff or collar, and luxurious fabrics in deep jewel tones. The subject should appear as a refined aristocrat or scholar of the era, with appropriate grooming and posture. The transformation should look natural and integrated, as if the person was always part of that historical context.

STYLE AND AESTHETIC PARAMETERS:
- Art style: Photorealistic oil painting in the style of Renaissance masters like Leonardo da Vinci or Titian, with visible brushstroke texture and classical composition
- Lighting conditions: Dramatic chiaroscuro lighting typical of Renaissance portraiture, with soft directional light from one side creating depth and shadows, reminiscent of candlelit studio lighting
- Color palette: Rich, warm tones with deep burgundies, golds, forest greens, and earthy browns; muted but luxurious colors with subtle gradients
- Background treatment: Dark, atmospheric background with hints of a grand interior or draped velvet curtains; slightly blurred to keep focus on the subject
- Texture and detail: High detail in fabric textures, lace collars, and facial features; slight painterly quality while maintaining photographic realism
- Pose and expression: Classical Renaissance portrait pose - dignified, slightly turned toward the light, with a calm, contemplative expression

TECHNICAL QUALITY PARAMETERS:
- High resolution, 4K, detailed
- Sharp focus on face with clear eyes and facial features
- Professional quality portrait with museum-grade finish
- Aspect ratio: 4:5 vertical portrait orientation
- Skin texture preserved with realistic pores and subtle imperfections
- Hair rendered with individual strands, styled in period-appropriate manner (longer for men, possibly braided or updo for women)
- Fabric details: Velvet sheen, silk reflections, gold thread embroidery visible

NEGATIVE PROMPT GUIDANCE:
Avoid: distorted facial features, unrealistic proportions, blurry face, loss of likeness, modern clothing elements, anachronistic accessories, cartoonish style, low resolution, pixelation, unnatural skin smoothing, exaggerated features, mismatched lighting, poorly integrated clothing, visible seams or artifacts, modern hairstyles, plastic-looking fabrics, washed-out colors, overexposed highlights, underexposed shadows

USER CUSTOMIZATION:
{additional_context}

ADDITIONAL NOTES:
For best results, ensure the uploaded photo has good lighting and clear facial features. The AI will blend your face seamlessly with the Renaissance attire and setting. You can specify preferences for specific colors, accessories (like jewelry or medallions), or particular Renaissance sub-periods in the {additional_context} section.