Glue a large plastic gem at the center of the crown. Trim the excess foam around the gem. You can further decorate the rest of the crown with a variety of materials such as sequins, rhinestones, foam or fabric shapes, small buttons, stickers, ribbons, lace, washi tape, and other accents.
In order to wear the crown, you need to attach a strap or a pair of straps to hold the crown in place around your head.
a.) Ribbons - cut 2 strips of fabric ribbon, each at least 12" long. Punch a hole each on the right and left edges of the crown. Tie one end of a ribbon around each hole. Tie the loose ends of the ribbons together towards the back as you wear the crown.