1. You will get some "roughness" or orange peel as they call it... from a spray can, many many times. But you can deal with it
2. The way to deal with it is to WAIT and WAIT and WAIT some more, as you need to do with lacquer. After a good three weeks, or more if you were heavy handed (fingered?) on the button.... after things have really shrunken in... you may discover... TAAAADAAAAA the orange peel is damn near gone, because its all shrunken down.
3. For the little bit thats left, I'd not use anything finer than 800 paper... 600paper being the preferred choice. Rub out the areas, and be gentle with it.... I prefer an oil - kerosene, mineral oil... for the wetting agent <--- thank you Frank Ford!~
4 When its all leveled, just buff it with some auto compounding to a high gloss - I prefer Turtlewax white compound (lacquer safe).
Your done. Compound goes from 600grit dull to gloss mirror in just a few rubs, its not hard at all.