hahaha, this was something i did in first year (back in 2008-2009). I remember the zipper being such a bitch to turn around in perspective and stuff that i had to make a hat model out of some sculpy clay first before i got it right xD.
I emphasise kingdom hearts because his zippers on his kindom hearts costume was such a bitch >A<;
programs: Good'old pencil and paper :3
My Tumblr My other animation:

I can't find any bumps or hitches in there at all
Thats so skilled!