Hot Fix Metal Neon Nail Heads will draw attention. They already have glue on the backs of them. Heat the nail nead with an applicator or your home iron to melt the glue. This will happen quickly as they are metal. The hot fix glue will adhere to anything porous, including leather, shoes, belts, etc. I always tell everyone to place a drop of water on your project. If the drop of water absorbs, then the hot fix glue will absorb! Other wise just use regular jewelry glue.