I do as Jeremy does above to a point, after I use the 3000 paper, I use 3M Finesse-it II. I use a obital buffer with a foam pad. After the Finesse-it I use 3M hand glaze or Meguiares Crystal Carnuba Wax.

Finesse-it II is a machine compound but can be used by hand if not doing a large area

Also, I try to do the buffing the next day after shooting the clear (PPG 2021). I longer you wait, the harder it is to work the finish.