The Cheshire Cat Optical Illusion is not only amazing, it is amazingly simple to set up. If you need any further help with the exact details of how to see the illusion, this link http://www.exploratorium.edu/snacks/cheshire_cat/index.html
to the Exploratorium in San Francisco will help.
But would you like to go further? Would you like to know what is going on inside your head when this illusion works its magic on you? Would you like to step inside the 'private theatre of the mind', learn about the WHAT and the WHERE pathways in the brain, explore binocular rivalry, prosopagnosia, the fusiform face area, and how the Cheshire Cat Illusion might really work? Then download our free article (in pdf format) and read on... Cheshire Cat Illusion Article