Fremen Warrior

First post. How's everyone doing out there?
A Fremen from Frank Herbert's Dune. He's just kind of hanging out, but he's had a pretty rough life. I hope to do a handful more inspired by the novels and then we'll see.
I welcome and look forward to any and all criticism. Been a while since I've done any drawing/painting/etc and I really want to improve.
Thanks all!