Well, my friend and I painted his rx-7 with spray and it turned out well.
First RULE:::: GET GOOD PAINT, if you use cheap paint, it will turn out like ****...
If you want a nice, semi cheap paint.. go to autozone/advance and get the automotive spray paint. Not sure if it come in flat but his had a small clearcoat mixed in with it.
Second, use 200 to 300 grit paper. you don't want deep cuts into the old paint. If the old paint is flaking off, then sand until area is smoothed.
Third, tape off each area. if painting the fender.. cover the hood,door, bumper with paper so you don't get over spray. You need to paint the car in small parts so the paint won't dry to quickly.
Last take your time. We painted his car over a week working 2-3 hours each night after work...
here are some photo of his rx-7.. BTW after almost 2yrs been outside it still holding up without any issues and he don't have time to wash or wax the car much so for a cheap paint job it worked great... believe total cost was around $50-75
Sorry can't find any close up:
BTW the car was orangish red and we covered it with black and repainted the red with red..
here is a bike we did also
As you can see it was green... did for the rx7's wife.