Dude! Spray cans can and do work if you make a couple of adjustments. (I am new to brewing but been restoring old card for years!) If your surface ain't slick, the paint wont be no matter what you do to it. Take the time to get all the dents out (or fill them in). Use a good epoxy primer if you can. Most importantly (and this may salvage your current project) you have to put several coats on, color sand with a really super-fine grit (800 or more) then recoat and use an even finer sandpaper or even use a buffer and a extra fine compound. The trick is to build up enough coats to be able to sand without penetrating the finish down to the surface. A nice clearcoat also helps. The problem with spray cans is that the spray is somewhat inconsistent, so you have to build it up enough to level it out. Ya want 1st class, ya gotta spend the time! Most freezers have a rough, veined finish. That's why I went with the vinyl wrap over stock white. I had a UV laminate added to it for about an extra $50 to protect against the sun and weather (my kegger is on the covered deck next to the pool) and it works like a dream. Good luck and, more importantly, HAVE FUN!