Fernando made the existing body parts without my pack, so strictly speaking you do not need my pack! The only thing I do is make pretty windows that let you fill in a few fields and then it will generate the raw asset for you and auto-generate as many fields as possible. But it is perfectly possible to Edit the assets directly in Unity.Right now I've made snippets to help you set up additional bones which is needed for the wings and horns. That's simply because I'm too lazy to fill out a 50 bone array by hand, and to worried that I'll make a manual mistake.It may be a good idea to look at the rigging for the existing heads, so your heads supports the same customization. For tutorials and raw base meshes look at the beta site.You should know that Barney G is working closely with the beta group on setting up a system where you can specify which OverlayData(textures) works with what SlotData(meshes). If that system ends up needing a helper tool I'll certainly be making that too.