Airbrush or spray can?
If you're airbrushing or using a spray can and getting a rough, lumpy looking finish, then you have an effect known as "orange peel" (the paint finish looks like the skin of an orange).
This could be caused by:
Often, while you can take steps to minimise orage peel, it may happen regardless. You may need to wet sand and poilsh to eliminate it. Applying more paint won't level it.
If you are using a spray can and are getting a honeycomb-like effect with tiny bubbles embedded in the paint,
It's mainly spray can. I painted a police car with a spray can on top, and air brush on bottom, and the air brush paint was much glossier and smoother. I am painting in my garage in south Florida; I thought the heat would actually help-I guess not. Thanks again for the reply.
On my workbench now:
"Third Annual Berny Memorial Build"
1/72nd scale Academy F-8E Crusader and A-10 "Warthog"