This is an optical illusion of a different type. One the most enjoyable paper activities I did as a kid was the hidden picture puzzles. Find the seven hearts in this picture and relive a little part of your childhood. I don't have the answers, but I did put down my guesses in the comments.
Update: I found the answers on the artist's site. This painting was done by Jim Warren click on the picture to go to the artist site for the answers. While your there check out the rest of his site it is well worth it.