#inktober2017 - week04

I'll try to keep up for the whole month with a mission: max 30 minutes sketch, strictly digital so I can practice lines since I always struggle on my tablet
week01-> https://www.artstation.com/artwork/mbx8E
week02-> https://www.artstation.com/artwork/r12G2
week03-> https://www.artstation.com/artwork/kx39x
week05-> https://www.artstation.com/artwork/90wWN