More than one character.
Exclude ugly, deformed, mutation, loosen body parts, extra limb, missing limb.
Double head. Long neck.
Badly drawn eyes disfiguret, double heads. nude, scar, tattou.
Hand double, third hand, double fingers, fifth finger, poorly drawn fingers.
Deformed legs.
Excess muscles, deformity.
Morbid, gross proportions.
Duplicate artefacts.
Text, signature, lettering.
Cropped image, out of frame, draft, double image.
3d.
Grain, low-res, blurry, poorly drawn, noisy.
Bad composition, out of frame, duplicate.
Horse deformed legs. Non trotting horse postions.