As requested by
hakumei, I have made a tutorial on how I did my latest
entry for the Animation Challenge. I've called this "Primary Colors" referring to yellow, red, and blue. This is made in Photoshop CS2 so I'm not sure if it's translatable into PSP.

If you have any questions, or if anything is unclear, just post here and I'll do my best to help you. Post what you come up with here too, I'd love to see your creations!
This style works with models as well as animations.