A woman sitting in a classroom with a tuba in her hand

best quality, masterpiece, highres, solo, {oumae_kumiko_soundeuphonium:1.15}, brown_hair, short_hair, brown_eyes, blush, serafuku, bangs, closed_mouth, 1girl, closed_eyes, instrument, kitauji_high_school_uniform, music, school_uniform, playing_instrument, sailor_collar, sweat

{worst quality, low quality:1.40}, {zombie, sketch, interlocked fingers, comic:1.10}, {full body:1.10}, lowres, bad anatomy, bad hands, text, error, missing fingers, extra digit, fewer digits, cropped, worst quality, low quality, normal quality, jpeg artifacts, signature, watermark, username, blurry, white border, {english text, chinese text:1.05}