Yeah, I screwed up but will this work?

D/A it with 180 and spray some epoxy primer on it. A quart should be enough to spray it. The spray some FeatherFill or SlickSand your going to need a spray gun with a big tip at least 1.8, 2.0 is better. sand it out with 180, then 220. Depending on how mice you want it to look you can either spray it with sealer then color or spray it with 2K high build and wet sand it with 400. You can spray color over the 2K or seal it and then spray your color.