1. Use Spray Adhesive when spraying stencils. You will get less under spray, which is the fuzziness around the lines that are supposed to be sharp and crisp.2. Spray in short bursts; Don't hold down the cap.3. Always wear Latex Gloves and a respirator when Spraying, as Spray Paint is toxic.4. Experiment in using different things under your designs. If you see a cool magazine page, rip it out, trim it, and use spray adhesive to mount it on your spray painting. (Check out my War Themed Portrait)5. Have a lot of colors to experiment with. Go to the store with 2 friends and buy 10 or so different colors. For around a $24 investment, you can ha...