{
  "structure_trigger": "A single contact sheet image containing a 3x3 photo grid matrix",
  "grid_logic": "9 distinct panels separated by thin white borders",
  "subject_consistency": "Same young asian woman in all 9 panels, identical outfit, identical hairstyle",
  "expression_variation": "9 different facial expressions (winking, tongue out, surprised, laughing, serious, etc.)",
  "camera_angles": "Varied angles in each panel (high angle, low angle, straight on)",
  "visual_style": "Photorealistic, Studio lighting, Light grey background, K-pop idol photocard style"
}