Time-lapse video: Drawing with Adobe Illustrator

Here's a timelapse video showing my usual drawing process in Adobe Illustrator:
http://www.youtube.com/watch?v=uvxyPDd-ZHo&list=PLT4SBQRuVcn-R61TRo5dLxF-WplnoBAEV

Sketching in Photoshop, then I import the draft into Illustrator, where I trace my sketch using the Pen Tool.