Here are two of my cards for Humorous Illustration. Overall, they're incredibly dark... which I'm ok with. I like the style I was working in and the process went fast and smooth. If you want one for yourself or to send to a loved one, let me know and I can make it for ya.
Here's a Book Cover of Alexandre Dumas' The Count of Monte Cristo. Done in Photoshop. The idea was pretty clear here, I really wanted the light streaming in to be the focus of the piece, and contrasting that ray of hope against the dark, grimy green of the prison cell I think was a good way to illustrate the scene.