Very cool! I love the pose and the bear's expression. I also love how the colors of the bear's fur and clothing clashes with the background color, and I love how you added the sparkle effect to the gem on his glove. Normally, I'm not a big fan of that effect but it works nicely here!
The only two things I don't like about this is the anatomy. There's no inaccuracies or anything, there's just nothing subtle about it. Also the bulge in his pants looks kind of...strange.
But anyway, I do like this piece as a whole. Good job!