When I was younger, my mom used to buy these awesome metallic water-slide decals around Halloween and let me wear them over black nail polish. It was literally my favorite part of Halloween. We haven't been able to find them for years now, which is sad because they were so cool; I'm sure they were made by Fantasy Makers and discontinued or something. Stamping is going to have to be the next best thing, I suppose!
I went through all my plates and picked out any that had Halloween-themed images on them and stamped away! The base is two coats of Sinful Colors Secret Admirer, which is an awesome black polish with tons of silvery shimmer that softens the harshness of the black. I used China Glaze Sci Fi for the stamping and I gave my spider a little black rhinestone accent. :)