Well, the dash was out and on the bench disassembled. I had the whole car down to metal so the doors were down to metal, epoxy primed, then primed, then paint, I let the enamel dry, then wet sanded with fine grit paper 1000, 1500 grit. and buffed the doors with mcguires compound paste. I didn't do any buffing on the dash, that was more getting it sanded smooth and getting the primer smooth. It wasn't a quick process Patience and knowing what is acceptable to you is key. No dirt in the prep work etc. Wiping things down between each coat with acetone etc.You may also have to use glazing putty on little imperfections. The tops of the doors usually have a small dent or scratch somewhere. Filler primer helps smooth things out, its a thick primer some call "high build". If you go to metal use a self etching primer, then a filler primer, then paint. You could get crazy and use gloss clear but the rust plenum gloss black dries with a gloss sheen pretty well.