http://www.marcellobarenghi.com
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FOLLOW ME ON G+:
https://plus.google.com/u/0/100778833339656906952
DEVIANTART: 
http://marcellobarenghi.deviantart.com
MUSIC: 
"Smart Riot" by YouTube Audio Library 
https://www.youtube.com/audiolibrary
DRAWING TOOLS:
http://www.marcellobarenghi.com/p/materials-used-for-my-drawing-video-on.html
I also used my old airbrush for doing some shadows
THIS DRAWING TOOK ME:
4 hours and 33 minutes