heres the steps to ensure a good even and smooth paintjob,i assume u have it apart already
:D :
use a medium grit sandpaper and go sand the entire area to be sprayed,not too hard just make it matt coloured
wipe it with a wet cloth to get rid of dust
give it a blast with a hair dryer on medium,dont hold it on the same spot for too long though!this is too evaporate any moisture and it also significantly helps the paint to stick
then lay down your primer,i recommend car primer
lay down a thin striker coat,basically spray a thin coat of your paint and i mean very thin over your primer
start laying down your coats
the more coats you do it in,and the less paint u use in each coat,the better your paint job will be trust me
spray evenly and slowly from around 14-15 inches away
allow 30 mins between each coat
use around 7 thin coats per can of spray paint,
follow this advice and u will have one sick ass paint job!