First draw wavy line vertically, then draw a single line horizontally (see right side of image). Fill the space between vertical lines with either a convex or concave line depending on if it is above or below the horizontal line
3D Glow LED Night Light 7 Changing Colors Optical Illusion Lamp Touch Sensor Perfect for Home Party Festival Decor Great Gift Idea (Cat)
25 Cool Optical Illusion Pictures to challenge your mind
Stare at the red dot on the girl's nose for 30 seconds. Turn your eyes to a plain surface like a ceiling or white wall. Blink repeatedly and quickly. You'll see the picture in full color. One of the coolest optical illusions I've seen.
Color Optics Color Correcting Finishing Powder NWT
Color Optics Color Correcting Finishing Powder New never used. The powder comes with box. BG Laura Geller Other