Cover the paper cone with an even coating of Mod Podge.
Immediately cover in glitter. Shake off excess. Be sure to put down a piece of wax paper before you do this so you can easily funnel your left over glitter back into it’s jar. Let dry completely.
Once dry, it’s time to seal the glitter so you aren’t covered in it every time you wear the hat! Paint another layer of Mod Podge right over the glitter. Let dry completely. It will turn clear.
Cut a piece of tinsel the same length as the circumference of your hat. Carefully use hot glue to attach it to the bottom of your hat. Then cut a small piece of tinsel and hot glue it to the top of your hat.
Glue it with two dots of hot glue onto the edge of the hat in the headband. Hold in place until it sets. If you want to cover up the inside you can glue a circle of cardstock to the bottom of the hat, then sandwich the headband between that and another circle of cardstock. Secure with a knot and then cover with tinsel as outlined above.