Scary Camera Prank allows you to make any photo look really scary. You can choose from a huge selection of creepy stickers, or upload your own pictures. If you want to scare your friends, just take a selfie and put a horror photo in the background. They will be really scared and will believe that you have the ability to scare people. 

You can also make an awesome photo montage with this editor.  You can choose to include a scary clown, a monster, etc. Choose the one that you like and use the horror photo effect to make your picture really creepy.