your skin mesh shouldn't have points in the middle
weak thorn
your skin mesh shouldn't have points in the middle
only along the outer edge and where it meets the lip
like this
hasty dragon
?
weak thorn
yeah
hasty dragon
okay that makes a lot more sense 💔
thank you 
weak thorn
and then if the skin isn't big enough for your open mouth, just drag it larger, the glue will keep it in place