If her teeth are too large then they will be noticeable regardless of how far away you are. The same way the Crow's Teeth are noticeable, regardless of distance this is because they are too large and cartoony looking. Not saying this is the case with WW though, just pointing out even on a shelf from a distance the teeth could still be too noticeable. I think lighting and angles would be the best way to hide the teeth, but that's if the teeth really are as huge as people are making them out to be.
The teeth are not noticeable in that pic because of the angle and lighting.
You must have exceptional eyesight. The Tux Joker has metal teeth and I can barely make them out when sitting at my desk around 6 feet away. WW's tiny front teeth won't be noticeable from any kind of normal viewing distance. The mouth has to be open much wider like the angry Batman mouth plates, laughing Joker or Harley to really see the teeth from distance.