It was late, but I make a comment. This is very cute! Something telling expression of Ren, Stimpy of expression to worry about and very good! I like your style. This painting is just like the original(John k, Bob Camp, etc...). I respect very much ...!
Thanks!!! All I did was a quick sketch on a piece of paper which I scanned and put in Photoshop(Paint will do the same job). I made the image really small, the same size you need for the DA icons. I added a new layer on top and use the pen tool to do the pixel work! When I'm finished, I delete the sketch layer so the background is transparent and you can save it as Gif or PNG. There are also some great tutorials about pixel art here on DA.