I recently dug up this old rig that I built during my school days. I wouldn’t necessarily build a face like this now (especially the mirrored controls), but it was fun to look back at the things I was trying to figure out. It was mostly a proof of concept, but I did attempt some animation with it, if I remember correctly. It It has some fun features, such as lip zipper and global squash and stretch, although it also looks as though some of the combo shapes were never hooked up. Feel free to use it as reference or for whatever.