Oh Photoshop, how I miss thee...
I did this in school during a study on Photoshop CS4. I was influenced by Zach Bellissimo with the tiedye paper.
There was no tablet available. That's right. ALL MOUSE. It was hard.
Basically, I just wish I had photoshop with me on my home computer. I used to have it, but the computer that had it blew up.