Hi TowerFan,
Nice to see another Dark Tower fan going creative
I think that you have done a great job, especialy as you are so new to 3D.
In my opinion, less is more, so if the lighting were darker and the textures subtle, I feel that the character would be more sinster in apearence.
The shoulder area kind of looks like it has been modeled to look the way it is deformed when rigged, if you catch what I mean.
I'd personaly make the limbs thinner and with more visual cues about the Wolf being a robot. I think that the head in the Novel was actualy some kind of strange plastic and not metal, but it's your model
Would be ace to see him throwing one of those Phantasm/Harry Potter balls
Hope this helped.
DaveLEWIS