I think someone once asked for a "biting the lower lip on one side only" expression. Here it is. Well, I'm cheating a little bit, since actually getting the lip in between the teeth isn't yet possible.

Anyway, I've done all the major shapes for the mouth and lips. There are still some auxiliary ones that I'm saving for later. The lids and brows are next. But I'll also have to experiment a bit and find out how to best weigh the asymmetric versions of the mouth shapes.

-- I'm not mad at you, just Westphalian.