Put it this way, There is a reason why there is a 6 year appreniceship for body work and painting.
It's not as easy as those guys on the shows on Speed Network Saturday mornings make it look. Hell, most of there ways, a real Bodyman would never use. With practice and the right researce you can become a decent "backyard" Bodyman, but start on a friend's Derby car or a winter beater or something, don't expect to get a professional job the first time out (or the first dozen times) until you learn the proper way to do things.
It's taken me almost 20 years to get to where I am now, restoreing trophy winning classics on the side, one of which, I beleive is in the Chrysler Museum in Detroit (a '69 Roadrunner) and I am still learning.