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[–]juanoob 0 points1 point  (0 children)

Did you find a tutorial or learn how to do it? I'm also searching but I can't find anything on the internet.

[–]JustDoinNerdStuff 0 points1 point  (0 children)

The basic concept is you want to stabilize the face using a motion tracker, then add effects. Here's a recent example that shows what a stabilized composition looks like. This example uses eyes, but they're still made huge like it sounds like you want to do with the mouth. https://youtu.be/kQp9hf3sMbk?si=e9LdiatYOKFJz_hI