Ignorance, combined with haste, is a sure fire way to screw up a paint job. Put the bike together, go for your ride and plan you paint job. Though you might laugh, I paint many of my bicycles with a can of Rustoleum and a paint brush. The results are not bad and this procedure is documented on
MY "TEN SPEEDS". I am not suggesting that you follow the
Hand Painting Bicycle Procedure, but it might give you a better idea of what to do.
Hope this is a help.