This simple trick can be accomplished using photos or copies of paintings. I wanted "creepy pictures" for my family room at Halloween. The room's theme is "abandoned house." I have sheets on the furniture and cobwebs over everything. These pictures are the perfect decorative accent.Research has shown that any picture in which the subject is looking directly ahead will have eyes that appear to look at you no matter the angle from which it is viewed. This is because pictures are 2D representations of a 3D world. As such, our brains ignore the clues that remind it that we are looking at a flat object and focus instead on the dimensional illusion created by the representation of light in the picture. No matter the angle from which we see it, even if it is a very skewed view from the side, we'll perceive it as a cohesive picture oriented toward us.The alteration I'm describing adds an actual 3D effect to the picture which is not consistent with the cohesive view, making it disturbing and, thus, creepier than a static picture with eyes that look directly forward. It works by receding the eyes below the surface of the picture. The depth of the eyes allows the edges of the eye sockets (which are not receded) to hide the whites on the side it is being viewed from, just as would happen if an actual person was turning their eyes toward you.