(masterpiece:1.25), (best quality:1.25), (watercolor painting:1.28), anime watercolor style, (Nakagawa Natsuki:1.3), Hibike! Euphonium, 1girl, solo, light brown side ponytail, soft cool expression, (playing euphonium:1.4), holding euphonium correctly, mouthpiece touching lips, right hand on valves, left hand supporting instrument, (sitting on riverside rocks:1.25), feet in shallow water, natural seated pose, vertical composition, (blue and white school uniform:1.18), (June atmosphere:1.3), fresh green riverside, hydrangea, early summer light, calm stream, subtle birthday mood, not overly celebratory, soft watercolor texture, delicate color bleeding, gentle light

(worst quality:1.45), (low quality:1.4), lowres, blurry, jpeg artifacts, bad anatomy, bad hands, extra fingers, extra limbs, distorted face, wrong instrument, tuba, trumpet, trombone, saxophone, flute, clarinet, broken euphonium, malformed instrument, multiple girls, extra person, oversized breasts, nsfw, balloons, cake, party hat, excessive celebration, dragon, monster, animal ears, weapon, random object, text, watermark, logo, signature, credits