solo girl, (18yo), elegant pose, standing on footbridge, flowing long hair, casual makeup, summer dress, floral pattern, canvas shoes, holding railing, river below, willow trees, sunset, golden hour lighting, soft shadows, peaceful atmosphere, wide-angle shot, natural textures, wooden bridge structure, vibrant greenery, clear sky, distant mountains, serene, high-resolution, detailed environment, 3/4 view, bokeh effect.