Technically it's fun with Photoshop CS5.
Discovering that the school computers have the program I played around a bit with it. I've long thought it would be fun to create a series of tee shirts featuring cartoony pictures of microorganisms people don't like. Eschericia coli is probably at the top of that list, regardless of how important it can be in maintaining a healthy digestive tract.
Anyway, I learned that while CS5 is pretty easy to use, it's also pretty hard to make smooth lines via a mouse. I'm pleased with the end result but plan to try again sometime to see if I can smooth out the edges a good deal.