Learning spray-painting the hard way

After my first attempt at spray painting, I opted for a much larger gun.  Specifically the 47016 gun.  According to the web page it:

• Sprays enamels, lacquers, metallic, and urethanes
• High versatility for automotive and hobby projects
• Ideal for spraying base coats and primers

Sure sounded ideal. So I picked it up along with my can of Killz Primer.

The Killz website says I can spray at 2,500 psi to 3,000 psi which is far more than my air compressor can deliver.

The spray gun said it was supposed to run at 50 psi, so I set the compressor output at 50 and gave it a try. At first it seemed to work, then soon I got blobs of paint on the tip and the end result of all of this was total crap. The carefully smoothed surface became a mess of blobs and mottled paint:

I obviously need a LOT more experience in painting, but I don't have time to experiment on the cabinet. I want to get it working!

Out came the rattle-can