Here's how you do; you get someone to whack you on the head with a humungo hammer while screaming, "SHORTER!!! ROUNDER!!!" every time you draw a kitty.
*WARNING* May cause concussion, brain damage, or even death.
Ah, well, you can always do it mentally. Hire a figment of your imagination to do it, and imagine the pain caused. I don't suggest the evil dude that wants to take control of you and eat everyone. No, someone else.