1. You need skeleton decorations, preferably small and plastic. I got mine from a dollar store around Halloween. Then you need some jump rings, earring hooks, and a hot glue gun.
2. take the decorations apart. I used mine for multiple things. Sometimes the parts pop off and sometimes you have to cut them with scissors. Regular scissors worked since mine were plastic, but I would use heavy kitchen scissors just to be safe. The rib cage popped off of mine, but if it doesn't pop off, I would just cut off the individual ribs one by one.
3. hot glue a jump ring flat to the top of your spine. You could also use super glue or something like that, but I didn't have any available.
4. Once the glue is dry, attach a second jump ring to the jump ring you glued onto your spine, and then attach the earring hook. It's really simple. :)