Besides keeping my eyes cross-eyed for 2 hours, I think I did fairly good. The image on the right is the original image. To view the 3D version of the image, you have to cross your eyes until a third image appears in the middle. Focus looking at the picture in the middle and the image becomes 3D. If you're having trouble, here's a tutorial: [link]
I didn't plan on the sketch to become a stereogram, but I got bored and decided to do it anyway. This is my first time doing stereograms.