{   "image_type": "flash_photography_snapshot",   "aspect_ratio": "3:4",   "subject_anchor": {     "demographics": "Young female, tan skin tone, dark brown hair",     "hair_state": "Long, loose waves, dark brown, falling over back and right shoulder, slight frizz/flyaways",     "makeup": "Heavy glam application, overlined glossy lips, contoured nose, highlighter on cheekbones and nose tip, defined eyebrows"   },   "clothing_and_accessories": {     "garment": "Rust-brown velvet/velour string bikini",     "fit": "Thong style bottom, high-cut leg, strings tied at hips. Top straps visible across back",     "jewelry": "Thin gold waist chain (belly chain) resting loosely above hips. Stacked gold bangles on left wrist. Stud nose piercing",     "nails": "Long, white, square-tip acrylics"   },   "pose_geometry_and_mechanics": {     "spine_pelvis_lock": {       "orientation": "Subject facing away from camera, rotated approx 135 degrees",       "lumbar_curve": "Pronounced lumbar lordosis (arch), anterior pelvic tilt",       "thoracic_twist": "Upper torso twisted tightly to the left to allow head rotation",       "pelvic_state": "Hips pushed back and slightly right, maximizing gluteal projection toward lens"     },     "limb_placement": {       "left_arm": "Shoulder elevated, elbow bent at acute angle (<45 degrees), hand raised to touch chin/mouth area",       "right_arm": "Obscured by torso, extending downwards",       "head_neck": "Rotated fully left over shoulder, chin tilted slightly down, eyes locking directly with camera lens"     },     "weight_distribution": "Visually end-weighted into the hips, standing posture, static hold"   },   "anatomy_and_skin_fidelity": {     "texture": "Real human skin texture, not smoothed. Visible pores on face",     "imperfections": "Visible silvery/white stretch marks (striae) on the lateral surface of the exposed glute. Uneven skin tone/tan lines",     "flesh_physics": "Soft tissue compression where the bikini bottom cuts into the hip. Natural gravity acting on the gluteal mass"   },   "environment_context": {     "setting": "Tiled shower stall corner",     "surfaces": "Small, square mosaic tiles (grey/beige/white mix). Wall curves cylindrically on the right side",     "props": "Chrome shower mixer handle visible on the far left edge",     "spatial_depth": "Subject stands very close to the tiled wall (<30cm distance)"   },   "lighting_and_atmosphere": {     "source": "Hard, direct on-camera flash",     "behavior": "Harsh, flattened illumination on subject. Strong specular highlights on shoulder, cheek, nose tip, and buttocks",     "shadows": "Hard, dark drop-shadow cast directly onto the tiled wall behind the subject, outlining the profile",     "falloff": "Significant light falloff towards the edges (vignetting), background tiles darker at periphery"   },   "image_technical_qualities": {     "color_palette": "Warm skin tones, rust brown fabric, neutral grey/beige background, flash-white highlights",     "focus": "Sharp focus on face and upper torso, slight depth-of-field blur on foreground glute",     "artifacts": "Digital noise in shadow areas, flash reflection glare on oily skin"   } }