your polish needs more compound. its not smooth enough .
if you have time, you can always 1500grit wetsand it

clearcoat it at least 3 layers to get it thick enough
then 1500>3000grit wetsand, then orbital buff it.

only problem with this is that. its a steel case?

you gotta sand it all times its smoother then smooth. or else grooves show up after clear drys and hardens