Not to introduce a negative aspect to this, but here are my comments. I owned and operated a paint and body shop for some years, have painted many cars, trucks, previously owned aircraft, and even a bus! Despite that experience factor (or because of it) I don't intend to paint mine. I have seen numerous fantastic airplane constructions that were clobbered up by the owner wanting to paint his creation. That attitude is admirable, but as the previous posts have pointed out, you need several things that you probably don't have, a proper paint booth is top on that list, unless you want it peppered with insects and blowing trash in the air. Experience with the particular paint products you are about to use comes next, that stuff has gotten very expensive to experiment with to acquire that skill for a one time job. I have befriended some years ago a neighbor who has an automotive body shop nearby, and he has already painted some of my Ercoupe. His very reasonable rates in my very low cost of living area makes it a no brainer for me. I intend to have him paint parts as I finish them, instead of the fully assembled plane, paint as you go process that some have used, some are opposed to.