Now finish off the hat by spraying glitter evenly all over the hat. If you get glitter somewhere you don't want it (like on the badge) it can be easily wiped off with a paper towel. It'll look a little foamy/frosty at first, but give it time to dry and I think you'll like the effect.
If you are more patient than I, you may want to do this step first. Just know that it take a few hours for the glitter to completely dry, and you won't be able to handle the hat until it dries.