Johnny,
Sorry to hear the silver did not turn out...such is life sometimes...
Steadying your hand when painting is improved if you reach out with a finger (pinkie usually) to touch the object being painted...makes a big difference... they taught me this back in art classes decades ago...
A cloth stretched over a popscicle stick can be used to wipe off the raised flat edge of the badge...that cloth can be very lightly dampened with thinner if a dry cloth does not work. I do mean very lightly dampened with thinner. You do not want thinner to be squeezed out running into your white or black paint you just painted! It is a little variation on Johnnie's suggestion I have used.
Good luck! You know us visually stimulated crowd here, we love pics even of carnage but, especially of success!
David