Custom Weapon Textures?

I was just curious, I've made some custom weapon textures that I would like to implement into the wynn pack, but I can't seem to find the vanilla items that are those certain weapons, or for that matter any of the weapons. I want to know how, if there is a way I can implement the custom textures.

 

i believe if you were to replace your models with the ones in the models folder of the pack it would work?
i'm not entirely sure how 3d models work since all i do is sometimes make textures for a personal resource pack or just put random shit in the items folder to replace them

and if you're gonna replace them, just keep in mind you'll have to disable server resource packs to enable your custom wynnpack
and you'll get a hella annoying message saying that you need to load the texture pack every few seconds (i think @BlahBlah161616 can confirm about the message)

 

the only thing in the models folder is the armour, I can't seem to locate where I should even replace them.

 

If I have to suffer with that fucking message with the next update I'm going to bug the admins until they fix it.

 

A sirloin steak would be nice