How to Generate Dynamic Rearing Horse AI Portraits

4K ultra-realistic Instagram wide portrait of a man riding a pure white horse rearing powerfully upward with both front legs lifted high and back legs pushing firmly against the ground. Face, skin tone, hair, and proportions must match the reference exactly. He has warm medium-tan skin, intense focused expression looking forward. Outfit: light grey knitted sweatshirt, loose brown trousers, slightly worn light sneakers, and a silver rolex watch. The horse is in a dynamic rear with visible ground impact, slight dust or dirt particles rising from the back legs, natural motion energy without exaggeration. Full body clearly visible. The man leans slightly backward with strong grip on the reins, arms engaged, maintaining balance and control.Camera angle: wide shot from a slight low perspective to emphasize height and power while keeping full subject visible.Background: misty green hills, scattered trees, soft overcast light, shallow depth of field, cinematic colors, natural textures, soft shadows, HDR realism.