Elliott Line sent me this nice optical illusion. You might have seen some similar with bank notes in the past. Remember Rupees Illusion? How about "The Queen Is Bald" one? If not, simply jump to our previous illusion tutorial. Elliot wrote: "Here is an illusion that anyone with a British banknote can do. By making hill-folds through the edges of the Queen's mouth and through her eyes, and then tilting the note back and forth, you can make the Queen appear happy or sad."