It's just like anything else that someone does for a length of time. You get the hang of it. Panel alignment is so 3 dimensional and unforgiving in some cases that it presents challenges even with lots of experience. That's when the artist comes out with a bag-o-trix and shouldn't be disturbed. The pics are here to show what you could do if you tried, not to discourage you from trying. Trouble is, W-bodies aren't worth as much as a can of paint no matter what has been done. So why bother? It's not like they wouldn't look great modified.
