Edit: I'm back on and off after a few years... I plan on finishing this tutorial up and modifying it so it will work with both Oldrim and Skyrim SE. (Plus, it helps me after a few years of not doing anything!)
This is a WIP tutorial. Currently only the Animation file creation part is done (from blender to a usable .hxk file) This tutorial, when done, will cover the steps required to either replace, or make a NEW animation in Blender, then add it to the game. This is meant to be a FU