How to Draw an Impossible Square Illusion - http://www.moillusions.com/how-to-draw-an-impossible-square-illusion/
Ever felt that piece of paper is limiting your creativity? So did artist João A. Carvalho, who has decided to use another dimension and blur the line between his drawings and reality.
Op Art on Pinterest | Victor Vasarely, Optical Illusion Art and ...
Lines and Shapes on Pinterest | Line Drawings, Hair and Op Art
Drawing with lines
Guitar Reflection Optical Illusion - http://www.moillusions.com/guitar-reflection-optical-illusion/
Black & White Más
[can't see a name for this - it's not an official zentangleTM tangle so it's called 'zentangle-inspired' art, #tangle, #doodle
Fun optical illusion, super easy... great for kids (and adults)
Is this Einstein or Marilyn Monroe? Welcome to ten of the greatest optical…