Drawing 3D Spider - How to draw 3D Art

A giant spider appears on my desk and tries to bite me... OMG Who's this adorable hairy tarantula?
➜ MUSIC: "Your Fool" by The Shtooks http://www.theshtooks.com
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➜ MY DRAWING TOOLS:
mixed media on grey paper, colored pencils, markers, watercolors, acrylic and airbrush http://www.marcellobarenghi.co....m/p/materials-used-f
➜ FINAL DRAWING: http://www.marcellobarenghi.co....m/2016/11/drawing-3d
➜ THIS DRAWING TOOK ME: 5 hours 27 minutes