[LE] Help converting extracted meshes and textures

[Sparrowings]

So there are a lot of great mods for clothing and armor modders have extracted from other games for Skyrim such as The Witcher 3, Dragon Age, etc. I got the idea I wanted to convert some of the Sims Medieval textures and meshes for Skyrim use (provided they give me permission to use it). I was following a great tutorial to extract the textures and meshes Here: http://oepusims.tumblr.com/post/117761643278/i-show-you-how-i-convert-sims-medieval-hair-to

 

The trouble is I can do the extraction but I don't know how to edit them to work in Skyrim. Is there a tutorial I can use somewhere? I'm still pretty new to modding and I use GIMP to edit my dds files.

 

Thank you!