WEEEELL! Whatcha think?
I like the snake, finish that!
I had the same idea as far as the Cheshire cat, and I feel fairly certain we're not the only 2. Make sure it looks as good as possible, it's gonna have to be better than the others. (and I'm not actually subbing one, I feel like someone will probably also do it and do it better than I can)
The rest I'd say you want some kind of a --> b progression (like spiritgreen did). Just glowing is ok, but it's much much cooler if you make more creative use of the GITD ink. I'd also caution you against using comic sans, both in your timey wimey design and also anywhere ever. It's pretty much universally reviled and will cost you votes.