Painting is the easy part, surface prep is the most important. If you adhere to some basics you'll do fine. Everyone's suggestion so far is good advice, you just need to make sure of a few basics like cool, clean, dry air and the surface needs to be squeaky clean before you layout your paint. You can almost not get it clean enough. Don't neglect the corners, nooks and crannies because this is where you paint job will start to fail causing the domino effect through out your paint job. If you take your time and do the prep work your paint job should come out just fine. Don't neglect some safety brother, wear a respirator because some of this paint is some real nasty stuff. Correct me if I'm wrong but it looks like your using single stage paint. If so, you really won't need to spray clear on since the paint actually makes it's own.