i'm going to apply a printed vinyl decal on my guitar body (it has been painted).. what are the tips/orecautions i should know about doing this? also, i need to know is how to seal it in.. i read that clear coating it with lacquer based spray might smudge the ink.. will this happen even if i spray very light passes..? is there any other method of sealing the vinyl in without causing major build-up on the guitar body (it affects the tone of the guitar)..