guitar paint problem

[makaveli]

i have this guitar nag thin yung paint niya very thin light of wood exposed
 (not a nick or ding) basta the thinning of paint pantay sa coat its like 1 1/2 inches long and like the thickness of a coin thick .. how can i repaint this its nitrocellulose laqcuer finish pero what kind of painting shall i use? air brush? paintbrush? or spray paint