Masterpiece, top quality, 1 girl, solo, 16 years old, beautiful girl, {beautiful and exquisite eyes}, long hair, blonde, flat bangs, blue eyes, calm expression, natural soft light, exquisite features, seduction face, smile, looking at viewer, normal build, correct proportions, ((sexy pose)), {normal limbs and fingers}, realism, twintails, X-shaped hair ornament, hair ribbon, red bow tie , (wearing uniform, sailor suit, white shirt: 1.3), tartan skirt, knee-high tights, standing on the quay overlooking the sea, blue sky, duck's mouth open, whole body, nice smile, teeth,