Here's an important lesson we learned after doing this job: The flakes will not all lie flat, no matter how good you are with the spray gun. They'll tumble around in the air and land in random order on the surface. Some will be standing on end and poking through your clearcoat. To fix this, we need to wet-sand the whole roof, sanding through any of those flakes that are standing up, until the paint is perfectly flat. Then we need to spray at least two more coats of clear to cover any exposed metalflakes. The flakes are often aluminum and will oxidize if exposed to the elements. You can't just wet-sand and buff the roof, leaving any flake exposed. We've all seen the way painted aluminum wheels will tarnish if the paint gets chipped; the same will happen to your flake job, though on a smaller scale. Sand down the standers and paint the roof one more time. Then you'll have a retro paint job to make all the old guys at the cruise night jealous.