Standard Face Mesh. The eyes map to the eyes, the oval in the bottom left maps to the inside of the mouth.
Skull and Face mesh. This is for if you have "Skull" selected in your head mesh. Bottom-left oval is the interior of the mouth.
Face, Skull and Ears mesh. Bottom-left oval is interior of mouth.
Snap Lens Studio face mesh UV's for anyone who needs 'em! (Extracted from their UV's in Blender. I couldn't find them in the documentation, maybe I was looking in the wrong places). Read alts for notes and to select the correct model for your uses!!! #snap #snapchat #lensstudio