You'd be better served by asking Crazycarl these questions. I don't know much of anything about models.

Hi! I was wondering if you could help me. I posted a thread in the modding section about how to add skins to a model. i downloaded applications, MilkShape 3D, kHED, MDL Decompiler, StudioCompiler, DuctTape, VTFEdit, GCFScape. What I did was use MDL Decompiler to decompile the ff_shutdown2 front door to get the SMD file. I took the VTF texture using VTFEdit that gave a targa file that I edited to create a yellow and green team texture. I am attempting to add these skins to the SMD file, then compile them back into a model. I know how to create a VTF and edit the VMF with VTF Edit. Thats not what I am trying to do, I am trying to make a model with the two new skins. I read that i need to make a QC file too which I do not know how to do. I am looking to create a model with only the yellow and green skins so i dont mess up ff_shutdown2 model in the game. I was wondering if you can help me. Thanks!