This was my first try and the head was a disaster. I was hoping to make teeth but I accedentaily ripped the paper in the head area. The rest went fine but when I came back to the head. I had to resort to a simpler version. The big lump in the middle is the rib cage in case it doesn’t look like it. Unfortunately, the rib cage merges with the head without a neck.
For reference: http://dota2.gamepedia.com/Undying
Folded from a single sheet of square, uncut binder paper.