I recently painted my Bronco with enamel. I waited about one week to let it cure a bit, then VERY lightly took 3m's 1000 Grit wet dry sand paper, used lots of water with soap, and a sanding block.
Check your progress regularly so you don't go all the way through.
After this step when you get it so you can no longer see the glossy outline of the run, use LOTS of water and soap and go with 3m's 1500 grit paper lightly for a couple of seconds (just enough to clear the 1000 grit scratches). Then take some fine rubbing compound and rub it out, for the extra shine use some finishing Glaze.
I did the above listed steps to my entire Bronco and it came out excellent!!!