We've seen some cool web apps come out this year, like Aviary, and now I've came to know a new one: Sumopaint. It's simpler than Aviary, but you can still make some cool stuff there.

Most of the images in their gallery remind me a lot of the expressionism school, which Van Gogh was part of. I recommend to you all to visit there and play around with it. As our friend Mikko suggested, try out the symmetry tool with the gravity on. I must say, the results are really cool. Cheers!