I had this idea of animating vector faces using the mould tool. This way all one would have to do is draw the initial face and then split it into parts and apply a mould envelope to each part. All the parts of the face would be able to move around the movements of the lips to create a realistic animation.
I couldn't be bothered wasting long hours trying to draw a face (especially since I have never attempted it before) so I traced a photo (and even that was hard work).
Animated mould tool face
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