When playing with both this mod and MorePlayerModels, all 2D armors from vanilla or any mod have severely glitched textures.


Also, when adding things such as wings with MorePlayerModels, it breaks the legs texture, and also doesn't show the second layer for the body

This might be caused by the crude compatibility code I added for MPM, which without it, the player skins will become glitched.

1.7.10 is very old... I don't want to fix every incompatibilities.
I guess you will have to live with it or just use an old skin without my mod for now.
Or, you could try other back-porting mod.