To tell the truth, it's a little too big for my taste. The effects are very nice and suit the stock nicely, but there's just something.. Missing. Maybe add some color splotches and textures. Colors look okay but it doesn't seem like there's any real depth. I'm not in love with that thing behind his head, either. Overall, the tag is nice.
The stock seems a bit over saturated. The left by his shoulder seems sorta empty, you could add something like a splotch maybe, as Misty has said already. Those are my only problems with this tag, really. ^_^
