I m not able to find a way to automaticly add this but would be a feature I would love to see. Have a way to change your face shape jaw line to deform automaticly according to certain visemes. For example if my character has a big mouth that opens his mouth it should be able to change the face shape... now all I can see on all demo models the mouth will just mask into the face or exeed the face shape that is not a desired effect. If not done automaticly give us a way to be able to modify our face shape for each per viseme when inserting each sprite ?