But beware, perfect execution of the various shapes of the dot nail design requires imagination, accuracy, and perseverance. Polka dots—a simple yet ... dots in a perfect grid-like fashion ...

Whether it's hidden images, ambiguous figures, or shifting patterns, optical illusions provide an intriguing mental workout. ...

Grid art is a fun thing, because it draws you into the puzzle before you even start solving. And the UMBRELLA grid art so perfectly matches the title of SINGIN' IN THE RAIN, that I immediately ...