{
  "frame": {
    "aspect_ratio": "9:16",
    "shot_size": "Extreme Close-Up (ECU)",
    "orientation": "Portrait",
    "composition_guide": "Off-center diagonal; face fills most of frame, pillow dominates camera-right; eyes near upper-middle"
  },
  "subject": {
    "subject_type": "Human",
    "identity_directive": "Analyze the uploaded reference image to automatically determine the subject’s gender, age group (adult), facial proportions, and identity. Preserve the subject exactly as they appear in the reference image. Do not idealize, stylize, or reinterpret.",
    "appearance_lock": {
      "rule": "ALL visible appearance details must be copied exactly from the uploaded reference image.",
      "locked_elements": [
        "hairstyle, hair length, hair direction, texture, and volume",
        "facial hair: mustache, beard, stubble, density, and placement",
        "clothing type, color, neckline, fabric appearance",
        "accessories such as necklaces, earrings, glasses (if present)",
        "overall grooming state"
      ],
      "prohibited_actions": [
        "inventing new clothing or accessories",
        "cleaning up, restyling, or simplifying hair",
        "adding or removing facial hair",
        "changing outfit color, fit, or style"
      ]
    },
    "visual_signature": {
      "facial_signature": {
        "face_shape": "Derived strictly from reference image (may be slightly compressed by pillow contact if visible)",
        "eye_details": "Natural eye shape and color from reference, realistic direct-flash or ambient catchlights as present",
        "nose_details": "Preserve original nose structure exactly",
        "lip_details": "Preserve original lip shape and natural color; no enhancement or stylization",
        "unique_features": "Preserve all real facial identifiers such as moles, freckles, scars, redness, asymmetries, or marks exactly as seen"
      },
      "body_signature": {
        "build": "Derived from reference image only",
        "skin_tone_and_texture": "Exact skin tone and microtexture from reference image: visible pores, fine facial hair, natural oiliness or redness; no artificial smoothing"
      }
    },
    "pose_and_action": {
      "description": "Side-lying selfie with cheek resting into a light-colored pillow, head tilted slightly toward camera",
      "body_position": "Upper torso mostly out of frame; neckline visibility derived from reference image",
      "limb_positions": "Arms out of frame; handheld phone selfie implied",
      "facial_expression": "Neutral to softly relaxed expression as seen in reference image",
      "gaze_direction": "Direct eye contact with camera lens"
    },
    "inventory": {
      "wardrobe": "Exactly as shown in reference image (do not substitute or simplify)",
      "accessories": "Exactly as shown in reference image; none if absent",
      "hair_style": "Exactly as shown in reference image; no restyling"
    }
  },
  "environment": {
    "setting_type": "Indoor",
    "location_description": "Bed, close proximity to pillow",
    "background_elements": "Neutral-toned pillow and bedding as visible in reference image; minimal emphasis"
  },
  "lighting": {
    "global_illumination": "Derived from reference image lighting conditions",
    "primary_source": "As observed in reference image (ambient or flash-based)",
    "direction": "Match reference image lighting direction exactly",
    "shadow_quality": "Match reference image shadow hardness or softness",
    "color_temperature": "Match reference image color temperature"
  },
  "camera": {
    "angle": "Phone selfie perspective matching reference image",
    "lens_type": "Phone wide camera equivalent",
    "focal_length_mm_equiv": 24,
    "aperture": "f/1.8",
    "focus": "Sharp on eyes and skin texture as visible in reference image; no artificial blur"
  },
  "post_processing": {
    "art_medium": "Photography",
    "style_modifiers": "identity-preserving selfie, minimal processing, no retouching, no beauty filters",
    "color_grade": "Neutral, reference-matched tones only",
    "rendering_engine": "Photorealistic"
  },
  "negative": {
    "appearance_changes": "changing hairstyle, hair volume, hairline, facial hair, clothing, accessories",
    "beauty_artifacts": "smooth or poreless skin, plastic texture, beauty filters, glam retouch",
    "identity_errors": "gender swap, facial reshaping, symmetry correction, idealized proportions",
    "visual_errors": "studio lighting, cinematic grading, soft beauty light",
    "anatomy_errors": "warped face, distorted eyes, mouth, or jaw"
  }
}