The most distinct example is her lips:
The head image shows a bad lipstick application, while the minifig shows a correct layering. I have both versions in my collection. I think Bricklink still doesn't have a separate category for the misprint.
Even within the correct prints, the lipstick will tend to be higher or lower against the black line, and I like to think they imply slightly different facial expressions. It's an interesting phenomenon to play with when you have multiples of a single head piece.