Everything about painting is a variable. I own an aircraft painting business. It is the same as painting models, only bigger! You could stop by a library and read about auto painting for tips on set up. You will have to set the controls of the gun correctly first, then begin adjusting everything else a little at a time, one at a time.

You have set the pressure, good. set the "fan" which is the width of the pattern so that it is even with no gaps in the middle, and is even top and bottom. Next set the amount of the flow, this is one of those variables, so start in the middle. As you spray keep an even distance from the subject and an even speed. It's in the rythem! As an experienced painter, I still have problems from time to time, but practice, and small adjustments give the best results. You may find you have to thin the paint, or move slower or faster, etc, etc.

Don't give up! As a lurker I have admired yours and others fantastic work here.

Lex