MGSV Venom Snake FanArt

So I've been playing MGSV: Ground Zeroes recently. Safe to say I'm pretty stoked for MGSV: The Phantom Pain to come out! Thought I'd do some fan art of Big Boss to express my excitement. Also, I could draw bearded dudes for days haha.

Trying some new things out, this here is my first attempt at a pass of digital watercolors which I threw over my lineart 

Pentel Pocket Brush + Kyle T Websters awesome Wet and Wild Watercolor Brush 

Anyone else who uses Kyle's brush, any tips/tricks ya got? Share 'em below!