Rivets would look best, and you would want to paint them before installing them. That way, you won't have paint everywhere but where you want it. To paint them, find a piece of cardboard, and stick several plain rivets into the cardboard, stem facing up. Use some white spray paint, and spray the part of the rivets. Let the pain dry thoroughly, then install them using a rivet gun.
Meddle not in the affairs of dragons, for you are crunchy, and taste good with ketchup.