Art style: Oil Painting.
Full-length view, the entire figure visible from head to feet, standing upright, centered in a Renaissance workshop with wooden beams, sketches, and brass instruments filling the sides. A young apprentice of Leonardo da Vinci, around seventeen, slender build, fair Tuscan skin with a light flush on the cheeks. Wavy chestnut hair falling to the jaw, clean-shaven youthful face, warm brown eyes wide with wonder and awe. He wears a simple linen shirt beneath a russet wool doublet, laced at the front, a leather belt with a small pouch, dark woolen hose, and worn leather ankle shoes. He clutches a bundle of parchment sketches and a charcoal stick, leaning slightly forward as if marveling at an unseen machine, lips parted in astonished admiration, soft daylight from a window.
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FINAL STYLE ENFORCEMENT (this is the authoritative rendering directive — it overrides any style wording elsewhere in the prompt):
Render this image entirely in "Oil Painting" style. Match the lighting grammar, material response, colour science, level of realism / stylisation, line weight, and shading model typical of "Oil Painting". Keep the subject, composition, camera angle, lighting direction, and colour palette from the description above — but EVERY surface, skin, fabric, material, and environmental element must be rendered in the "Oil Painting" idiom, not in any other medium.
