Make sure you read this before you spray. Especially the part about spraying over bare metal.

http://www.performancecoatings.dupon...421-21_TDS.pdf

Also, you may have to thin it a bit more than the data sheet recommends. I've found that out the hard way - orange peel.

Did you get some measuring cups?

http://www.autobodydepot.net/scripts...gm=mixcups.bbx

and strainers?