amputee, autograph, bad anatomy
bad illustration 
bad proportions
beyond the borders
blank background
blurry
body out of frame
boring background
branding
cropped
cut off
deformed
disfigured
dismembered
disproportioned
distorted
draft
duplicate
duplicated features
extra arms
extra fingers
extra hands
extra legs
extra limbs
fault
flaw
fused fingers
grains
grainy
gross proportions
hazy
identifying mark
improper scale
incorrect physiology
incorrect ratio
indistinct
kitsch
logo
long neck
low quality
low resolution