troque o fundo, Place a green school slate with mathematical equations in white chalk

(nsfw:1.5),(AS-Young-Neg:1.3), (monochrome) (bad hands) (disfigured) (grain) (Deformed) (poorly drawn) (mutilated) (lowres) (deformed) (dark) (lowpoly) (CG) (3d) (blurry) (duplicate) (watermark) (label) (signature) (frames) (text)