On top of colors, you seem to be working against your silhouette by setting the arm into the body like that. It makes the design look excessively sterile! Pop that shoulder back out so he's not cringing about the woods!
Also, work on the cluster of white. I thought it was a mouth before realizing it was supposed to be fur patterning. Add a few pixels so it's all one shape and try to accentuate the snout a bit more!
There's other ideas I got but I'll let you post a rework before I get crazy, haha