I adore such images that trap you with illusions. Here is one of the most hard to identify. Can you see both the image of an older woman as well as a young woman? If not, keep trying until you can. Hints are at the end of the image if you can't figure out yourself.
















(Hint: The old woman’s eye is the young woman’s ear. The old woman’s wart is the young woman’s nose, and the old woman’s nose is the young woman’s chin.)