Masterpiece, best quality, extremely detailed, ultra detailed

masterpiece, best quality, extremely detailed, ultra detailed, flat anime, 2D, ((1boy)),black hair, (short hair:1.5),blue eyes, height 1.7meters, (circle eyes:1.2), (young adult:1.2), Ear-length sideburns,height 1.7meters, High School Uniforms, white shirt, blue tie, ((short sleeves)), ((long pants)), sitting, closed mouth, thinking, upper body, summer, classroom, 11AM,looking at his smart phone., Operating a smart phone

worst quality, low quality, bad anatomy, bad hands, bad body, missing fingers, extra digit, fewer digits, shoes, monochrome, ((muscularity))