Project Runway is gearing up for a four city casting tour beginning March 30th in Los Angeles and continuing to Chicago, Miami and New York City. If you want to make the season four cut, you'll need to bring three garments of your own design, a picture portfolio and your completed application - soon to be available via BravoTV.com. And, don't worry, Tim Gunn will be back despite his many extracurricular activities.

In the interest of helping further your design career, I've put together a brief primer for success on Project Runway - from the auditions to the final catwalk.