How much time you want to put into it and how much paint did you lay down? If you don't want to mask and shoot it again, hard block it out with 800 wet, 1200 wet, 1500 wet, 2k wet then 3k wet. Then buff it out. Worse case you burn through (be careful around edges) and have to reshoot it, and maybe you save some paint materials and it flattens out enough for you to be happy with it. Or DA it flay with 6 or 800 dry and a soft pad then reshoot (again, very careful/avoid around edges so you don't burn through.)