Here's something I've been slowly working on lately. The first image is the finished piece, below are the original sketch and an old color version. I grew steadily unhappier with the background the more I worked on it, and eventually realized I thought the image worked much better utterly sans context. (This is a very purposefully over the top piece, and I think it's funnier without the admittedly generic post-apocalyptic setting.) Now that it's finished, I'm pretty sure this will make a great general "congratulations" greeting card. ("You did it!")
Also, note the reworked colors, other than the obvious red, I tried to get everything to pop a lot more.