Q&A for How to Make a Headband

Wrap the hard shell headband with ribbon first, and then use your hot glue. It will stick much better to the ribbon than to an uncovered base.

Yes. You can get headbands for dogs online or in different pet stores. Of course, be sure that your dog is comfortable with the headband on its head, and don't force it to wear anything it doesn't like.

The sleeve makes a good headband, but you could cut and tie any part of the shirt.

Maybe wrap it around a plastic hard one or perhaps make a headband with a stretchy fabric underneath.