cinematic chiaroscuro portrait at night, (((extreme low key lighting))), (single extremely weak right side light), deep crushed blacks, body mostly hidden in shadow, only faint contours visible, dramatic shadow contrast, black background, atmospheric darkness, subtle film grain, ((very underexposed photography)), almost invisible details, darkness dominating the frame, negative space, (a 21 years-old ballerine dancer woman, in underwear, is training in the shadows in a dark valley room, hands above head, one leg raised, feet with ballerina shoes, skinny, muscled, slender legs, long blond loose hair lifted right by the wind)