Photorealistic Gym Mirror Selfie (Structured JSON)

A highly detailed, structured JSON prompt for generating a photorealistic gym mirror selfie. It specifies the composition (rear three-quarter back view), the subject's features (athletic build, black hair, specific clothing like a yellow crop top and green shorts), and the modern gym environment. The prompt aims for high technical quality, sharp focus, and a casual, confident post-workout vibe. Via YouMind OpenLab prompt library (MIT).