Here are some before pics as you can see it has some small dust particles in it as well as being dry with not much clear. When I used to do paint work on high dollar street rods I would never let the customer see it before it was color sanded and polished because they always looked like crap but on pourpose. Urethane paint if you put it on thick and shiney once you polish it it gets a mottled look to it that if you look down the side of the car you can see. If you put the paint on dry and then sand out the texture and polish it, it is flat as a piece of glass.

On cars you should be able to put a dime on the ground next to the car and tell if it is heads or tails in the reflection. On airplanes simply smooth and shiney is enough. Mine dont last long enough to worry about much more than that.