Drawing a spiral pattern hole, anamorphic optical illusion, 3D trick art Inspired by the hole in the movie Charlie and the Chocolate Factory. Materials used: 110lb .brDrawing a hole, anamorphic optical illusion, 3D trick art Thank you for watching and Subscribe! You can follow me on facebook, instagram and society6 (links .brbrbrDrawing avesome illusion stairs. Mixed media. Materials used: Pastell paper: light gray. H graphit pencil (Derwent) Markers: Letraset PROMARKER Black and .