Horror Photography Challenge: How to Make Ghosts in Photoshop or Gimp

To enter this week's Giveaway Tuesdays Photo Challenge, you'll need to create a shudder-inducing photo of some kind. You can use props or makeup, play with lighting or show off this year's Halloween costume… or you can play with Photoshop or Gimp.

How-To Geek has a great tutorial for creating ghosts superimposing two different photos.

Before

After

Click through for instructions. Check out this week's challenge here.