Dev that colour is sensational!
As for technique, if your using a rattle can, keep it around 15-20cm away from your guitar and have the can moving before you start actually spraying, this will hopefully eliminate most of your runs. If an area looks really wel, stay away from it, stop painting if you have to, if you paint on a wet spot, you chances of a run increase. Another thing is that you can do a coat every hour or so. If your nozzle is spraying vertically, (up and down) then spray across the guitar (left to right). Overlap each layer across the guitar only just, it'll look streaky to begin with, don't worry about it. After you do that, turn the nozzle to spray horizontally, then spray up and down the guitar,again just overlapping it. if you change that nozzle every time you do a coat on it, it will get rid of that streaky effect and it should come up pretty evenly!
Just make sure you shake the hell out that can before you start painting again, and keep it remaining upright the entire time! 😊