Full-body portrait of an 18 year old girl lying face-down on a bed in a prone pose, viewed from behind from a slightly elevated rear angle. The head is turned to the left in profile, one cheek near the pillow. The arms are bent at the elbows and extended outward along the pillows. The torso is stretched forward, shoulders relaxed, back visible, hips centered, legs extended backward and separated slightly. Soft indoor bedroom lighting, natural relaxed pose, realistic anatomy, neutral non-explicit composition.