Girl, young adult, solo, (18yo), gentle smile, soft facial expression, brown hair, parted in middle, casual hairstyle, minimal makeup, white blouse, long sleeves, lace trimming, blue skirt, knee-length, pleated, black stockings, leather shoes, sitting at desk, writing letter, holding pen, paper on desk, wooden desk, warm lighting, cozy atmosphere, 3/4 composition, shallow depth of field, soft focus.