If you wet sand the clear coat dull, you may have to reapply clear coat. In which case, you will have to examine your setup to find the cause of your orange peel.
What kind of gun, nozzle size did you use to apply the clear coat? I use a 1.3mm tip to effectively atomize the clear coat (This works for PPG Deltron DCU2021). Also, it's very important remove humidity from the environment and the line. Make sure humidity in your painting area is less than 65% Grab yourself a cheap humidity gauge from Home depot. Dessicant filters are a must. As painfully slow as it is, you have to respect the recommended flash times. Also, it is very important to have lots of soft flourescent light on the surface. That way, you can monitor how your paint is laying down.
As mentioned, increasing the pressure on the gun also helps.
When I shoot clear coat, I make it a goal to get it on right the first time and avoid having to wet sand. For me, wet sanding decreases some of the shine in the finish. Apply the buffing compound with a rotary machine buffer and a soft buffing terry cloth head. Don't try to buff it by hand.
I repainted sections of my Jeep in my garage earlier this year:
I learned by trial and error, but I finally was able to spray on orange peel free sections.