Drawing creates opportunities to change parts of an image, or combine two or more images to create something different. This drawing looks realistic but it is taken from studying two images, one of the eye and one of the hand.
Two Faces or a Vase? Old or Young Lady? 10 Simple but Wonderful Optical Illusions
Trees, nature's condos for the little guys, are not just a pretty picture. Squirrels, birds, and bugs count on them for a place to live. (I know the lens is about trees and not art. But I love that face-in-the-trees illusion artwork.