Furring a resin movable jaw

(edited to hide the other pictures)
Hey guys!!
I'm making my first fursuit, since my submissions to have one commisioned have been declined. Apparently I'd have to be 18 to commision one. It's ONE YEAR OFF >.> :P
Ranting aside, I still need to clean it up a bit, and I might remake the eyes so the pupils are more round, but I'm having some trouble with the movable jaw. I can still access the inside, I haven't sewn the back together yet. I still need to tighten the springs :)


I get a weird bulge when the jaw closes. I've tried sewing it a bit to make it fold inside, but it still looks funky.

Here's what it looks like when the jaw is open, if that would help? I didn't do anything with it, it's just the fur there.

Any help is apprectiated, thank you!!
<3