I would suggest getting a sprayer and spray the Rustoleum on. I tired the roller method and was disappointed with it. Some panels turned out great and others had orange peel or roller marks. Maybe I didn't thin it enough or not but if you are set on doing it there is another forum dedicated to this very subject with plenty of pics. I think it's called "Rolled On Forum."
FWIW I believe the whole roll on buzz started on the Mopar forums with a Canadian and his 69 Charger. The guy did an amazing job on it! He also sprayed one of his cars with Trimclad (sp) or what ever the Canadian's equivalent of Rustoleum.
Further more the rolled on method, if you want it to look good, requires a LOT of work and time. Spraying it takes less time. I'm redoing my truck and decided to do a bedliner job on it with a red stripe on the sides and tail gate. Still working on it. https://dodgeforum.com/forum/2nd-gen...ml#post2816002

 

Here you go:
http://rolledon.forummotion.com/
http://board.moparts.org/ubbthreads/...0&fpart=1&vc=1