Single stage paint job.. no shine

I'd start with a clay bar like mentioned above. If it's rough because of the spray job (dry, gun being too far away) then the clay bar will have no effect. If it's rough because it's dirty, then you'll want to get that out before hand.

I'd first hit it with a foam pad on a buffer and see if that does anything. If it doesn't seem to be pulling up much of the color, you can try a more aggressive wool pad to see if that cuts it to your liking. Then foam pad and soft foam pad to polish and see if you can get the shine out of it that you want.

Maybe smart in an inconspicuous spot like the passenger rocker.