Really strong pose, anatomy and flesh tone rendering. Very nice so far -maybe a barbarian look with leather will help showcase the exposed chest. Otherwise, I feel that you'll lose all of the flesh rendering under the armor.
My sketchbook is here
Oo very nice so far. I agree with softocean on that you have a very solid and interesting pose there and adding to much armour would lose it. HMmm i think maybe a mayan or african warrior would be cool. With all the different tattos, weapons,trinkets, bones and jewlery the variety would be very interesting and you could create quite a character. Although you would need to darken the skin color for a mayan or african person but that should be fairly easy in photoshop, and you look like you know the program far too well . good luck, whatever you do im sure itll turn out cool.