Very nice. Although I don't like the idea of hacking up glueing 2 of my black minifig hands to achieve that effect. The face you chose is a good one, except his beard's a little pointier. But of course, you are at the mercy of Lego's selection of minifig heads, that and what you own.
One more thing that you could work on is the way he's holding his rifle. If you look at my photos, my figs are holding their rifles in both hands. I'm not slamming your figure or anything...it's just that I haven't seen many people firing their rifles or charging with them in one hand.