[Help] Help with model edit

[Oppochaos]

Hello, i was trying to build my first model edit, in an attemp to make my first contribution. I am trying to change alll of the warlock pets to other creatures. I have gotten all of the pets to the creatures i want but the skins are messed up, for example: Im changing my Voidwalker to the Chinese dragon, but the voidwalker has 1 skin file and the dragon has 2 (the normal skin and the wings). How do i make the MPQ use both the skin and wing file?

Thank you