I recently did a bit of bumper painting on my son's Focus. When I got the paint for that, I got a rattle can for the Saab as well as I have to paint an Aero front spoiler lip, and a cover for my sharkfin aerial.
However, the front bumper has dull paint in areas that I suspect have been previously been rattle-canned. So I am wondering if I am better off rubbing the surface down and spraying with my mixed rattle can when I do the spoiler lip and sharkfin cover, or rubbing down the existing paint and just lacquering it?
Any tboughts/recommendations?