Hyperrealistic Speed Drawing of a Rubik's Cube by Marcello Barenghi

http://www.marcellobarenghi.com
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3D Illusion "Rubik's cube" drawing, hand drawn,
FINAL PICTURE:
http://www.marcellobarenghi.com/2013/03/rubiks-cube-3d-illusion-drawing.html
DRAWING TOOLS:
http://www.marcellobarenghi.com/p/materials-used-for-my-drawing-video-on.html
It took me 1 hour and 38 minutes
MUSIC:
"Canvas 9" by Dan O'Connor (http://danosongs.com/package/)
http://www.youtube.com/watch?v=SEfg2mR6yME