product shadow-play, SOLVET bottle, hand-shadow, B&W, grain. Avoid: chibi, sparkle-eye, AI anime smoothness, cartoon shading, plastic skin, HDR, over-sharpening, symmetrical stock-photo smile, direct-to-lens grin, catalogue sit-and-pose, teal-and-orange default grade, Leonardo purple, cluttered background, multiple competing subjects, real brand logos, real film/character IP, celebrity likeness, watermark, CGI render look, extra fingers, warped limbs, melting objects, impossible grips, hands fused to props, head amputated inside the frame, toilets, bathrooms, full single-colour face paint, open-mouth snarl, stained teeth, icky dental close-up, blood, gore, wounds, viscera, cohort words, trendy, viral.