Nudity,
nude, 
showing boobs, 
exposed, 
2 heads, 
2 faces, 
cropped image, 
out of frame, 
deformed hands, 
signatures, 
twisted fingers, 
double image, 
long neck, 
malformed hands, 
multiple heads, 
extra limb, 
ugly, 
poorly drawn hands,
bad anatomy,  
missing arms, 
long body, 
disgusting, 
misshapen face, 
face without detail, 
missing facial feature,
cloned face, 
missing leg