Review (4/5): Don't use the instructions
First thing, don't bother with the instructions that come with these, they are completely wrong about cutting. These are stickers you can just peel them off. Tweezers might help, but I just used my fingernail.
These stickers are really neat, and have a goth/Halloween aesthetic. They peel off with just a little bit of work, stick on well and don't ripple easily.