What do you see in the picture? Some of you may find it out very quickly, while the others struggle a lot or even fail after pouring too much effort in it. Here are some tips of how to find the hidden image in the picture.
"Hold the center of the printed image right up to your nose. It should be blurry. Focus as though you are looking through the image into the distance. Very slowly move the image away from your face until the two squares above the image turn into three squares. If you see four squares, move the image farther away from your face until you see three squares. If you see one or two squares, start over!
When you clearly see three squares, hold the page still, and the hidden image will magically appear. Once you perceive the hidden image and depth, you can look around the entire 3D image. The longer you look, the clearer the illusion becomes. The farther away you hold the page, the deeper it becomes. Good Luck!"
(from the Magic Eye webpage, http://www.magiceye.com/faq_example.htm)