I found a bit of inspiration on Tuesday, and completed two of my cards, shown below. The third I started when I first received them a few weeks ago and it is still in progress (obviously). It's tough getting the black as black as possible (I stunk up my kitchen using a big fat Sharpie over and over). I'm still not sure what I want to do for the fourth one. I'm thinking something in color.
Please e-mail Jeremyb@comics2games.com and have all of your friends (artists or not) e-mail him to get involved with this cause.