{ "source_lock": "Treat the uploaded image as the immutable structural master. Preserve every visible source component exactly one-to-one: silhouette, proportions, thickness, openings, cutouts, separate parts, layered elements, attachments, readable text, logos, labels, facial details, decorative elements, relative positions, overlap, depth order, camera angle and composition. Nothing visible in the input may disappear, merge, move, simplify or be redesigned. Material scale must automatically adapt around fine source details.", "palette": { "leather_base": "#F2B3CA", "cobalt_airbrush": "#3459E9", "acid_green": "#C6F632", "deep_plum": "#633260", "background": "#000000" }, "construction": "Reconstruct suitable surfaces from genuine fine ostrich-grain leather tightly formed over the existing rigid geometry without puffing or changing its silhouette.", "surface_physics": "The leather must show the characteristic irregular follicle quills of real ostrich hide: scattered raised round follicles of varying diameter, fine natural grain between them, slight puckering around selected quill points and subtle directional creasing at bends. Dye the base soft pink, then apply large directional cobalt and acid-green airbrush clouds that penetrate the natural grain unevenly while leaving the raised follicles slightly lighter or darker depending on pigment accumulation. Use deep plum only inside several overlapping sprayed transitions. Keep the color fields large and editorial, with broad pink leather areas untouched.
Add real leather behavior: faint pores, tiny grain scratches, slight dryness along several edges, subtle handling polish on exposed follicles and microscopic pigment overspray visible inside the grain.", "detail_control": "Use finer follicle scale and calmer airbrush treatment around text, logos, openings and tiny attachments.", "lighting": { "setup": "Broad soft directional illumination from upper-left-front, with restrained neutral frontal fill and subtle upper-right separation from the black background.", "exposure": "Consistent exposure across the entire material collection, with deep clean blacks, rich readable midtones and controlled highlight roll-off.", "light_behavior": "The illumination direction, softness, intensity and contrast remain identical across every material; only the physically correct response of the material itself changes.", "restrictions": "All light sources remain outside the visible frame. No visible lamps, softboxes, light panels, white cards or studio equipment. No rectangular or square light-source reflections, no HDRI environment, no bloom, glow, halo, lens flare or artificial rim-light outline." }, "composition": { "camera": "Preserve the exact source viewing direction and orientation.", "position": "Centered and freely suspended.", "background": "#000000", "floor": false, "cast_shadow": false }, "quality": "Photoreal fashion leather macro photography, authentic ostrich follicle structure, real dyed grain, sprayed pigment behavior and premium tactile detail." }