Ever go walking and catch something out of the corner of your eye? Something you can't explain? Something that makes the hairs on the back of your neck stand up and march? There, then gone in a blink. Creepy, huh?Here's a tutorial on how to make this creepy ghost. In my opinion, the best scares are the simplest to pull off. I'd love to see this alongside a road, but I'm sure it would cause an accident!