A young man standing in front of a vivid mustard-yellow wall.

"A bright, candid portrait of a young man with thick, tight black curly hair in a rounded, fluffy crop, smiling softly with a warm, slightly playful expression as he tilts his head to the side and looks at the camera. He has light stubble and a relaxed, confident posture with his arms hanging loosely at his sides. He wears a slate-blue chambray cotton button-up shirt with a spread collar, a chest pocket with a small dark embroidered horse logo, the top buttons undone, and sleeves rolled to the elbows. A black beaded bracelet is on one wrist and a dark watch on the other. The background is a vivid mustard-yellow wall with a dark vertical pole at the top and a white-grey wall-mounted fixture on the right, giving a clean, graphic color-blocked look. Warm, soft natural light with golden highlights on his face and shirt, a bold yellow and cool blue color contrast, natural skin texture, shallow depth of field, lifestyle photography, shot on a smartphone, vertical 9:16 aspect ratio, close three-quarter framing, sharp focus on the face."
Tips:
Add "photorealistic, warm golden light, natural skin texture" for a more lifelike result.
To make the colors pop, add "vivid mustard-yellow backdrop, soft blue chambray, strong complementary contrast."
To avoid brand issues, replace the pocket logo with "a small dark embroidered emblem."

Copy the complete prompt and use your own reference photos where requested.