You'll want to use acrylic resin, thinned with a little bottled water, just enough to let the paint flow like water. If you want you can strain the paint so no clumps clog the HVLP gun. Spray light coats and let it sit for about 10 minutes before applying another coat. Repeat until yoo get the desired coverage.No need to prime...Let the paint cure for a day before glossing. Also, LIGHTY sand the paint with 220 grit or so to help resin adhesion to the paint. Just scratch it up a little.