LBlack14 I meant cleaning the paintfill
Take a paper towel and fold it so it has a flat surface to it.
If just going over an unpainted surface you can use acetone rubbing lightly,
if going over a painted surface use some alcohol on the paper towel shortly after you do the paint fill.
The trick is to go ACROSS the lettering or sight line not with it.
Use a paint pen with an oil base or lacquer paint that has a medium tip.
Don't paint the face either if you decided to coat the whole head.