Put glue on the shell. Turn the shell over to find where you want to affix the hair clip. Keep in mind you want it flattish so it can sit in the hair nicely. If you don’t have a good flatter surface I suggest using my felt trick. I’ll talk about below
Position the hair clip. Position the hair clip on the glue and hold it in place until the glue is dry. Remember that the the bumpy parts of bobby pins are meant to be pointed downward.
Enjoy. It really is that easy!