Unrealistic anatomy, Blurry, Poorly rendered, Unnatural lighting, Disjointed appearance, Bad proportions, Lack of detail, Unprofessional execution, Cartoonish, Low-quality rendering, Distorted features, Inaccurate shadows, Grains and noise, Inconsistent style, Overly simplistic, Uninspiring, Mismatched elements, Flat colors, Lack of realism, Unconvincing pose