Fawful's Attempts at Spriting

K, so I made my first completely custom sprite sheet. It's Wittgenstein from the Brave Little Toaster movies. I was originally going for M&L: Dream Team style but soon realized that was not currently possible for someone at my skill level. What do you think?

Image may be NSFW.
Clik here to view.

I submitted it on TSR, but it hasn't been approved yet.