Warrior

I don't usually do digital art, but I thought I'd give it a shot. I don't quite think this a masterpiece, but I'm just curious what you think and if you have any suggestions for me to improve.

Stock photos:
Temple: www.snoron.com/view-tree_roots_inside_old_temple_ruins-wide.html
Warrior: www.deviantart.com/art/Barbarian-Warrior-22-77828963
Lamp, Fern & Head: http://moonglowlilly.deviantart.com/gallery/39052922/PNG-S
Ivy: www.dreamstime.com/stock-photo-green-ivy-image1925610
Snake: http://a68stock.deviantart.com/art/Rough-green-snake-stock-338109045
Scorpion: http://markopolio-stock.deviantart.com/art/Scorpion-Aug-17B-62598663
Centipede: http://crysta-stock.deviantart.com/art/Centipede-in-hand-160543613
Eye: nl.forwallpaper.com/wallpaper/…
Scar: http://www.visualphotos.com/image/2x1902130/boy_with_scar_on_face
Burn: www.i4design.dk/tutorial1.htm