Im new to painting and have only sprayed a few vehicles. all of which were outside and turned out great.
Some of the guys have suggested really good advice previously. the tape was a on point. use 3M and masking paper! thin paper bleeds, some tape is way too sticky... messes up custom paint work and is hard to clean off a "tape off and spray" basis.
if your using the same color over the old paint I dont see why you would need primer. I wouldnt even prime it myself , would just sand (320?) down into the color past the clear, spray it ,then clear it. It is probably recomended you use a sealer or adhesion promoter type primer. Im saying I would just spray it
if you ever hit metal use an etcher primer.
I have also bought paint from Napa for the last two vehicles. this turned out to be pretty good paint. easily accessible also.
Hope it turns out great, and you enjoy the experience.
Anyone else like/dislike Napa?