1girl, solo, nude, completely nude, bare skin, no clothes, bare shoulders, bare arms, bare legs, bare feet, bare ears, bare earlobes, no jewelry, hair completely unadorned, artist model, life drawing model, posing, seated, sitting on stool, velvet-covered posing stool, long hair, wavy hair, chestnut hair, hair falling over one shoulder, slender, neutral expression, relaxed, looking to the side, looking away, knees together, hands resting on thigh, one hand on knee, head tilt, soft lighting, warm highlights, glossy skin, smooth shading, mature anime style, intimate mood, sensual, studio interior, plain seamless backdrop, slightly from below, cowboy shot, three-quarter view, half-closed eyes, parted lips, soft blush, quiet composure