Cool, what's it about?

It looks nice :)
But here's an advice: try adding some deeper shadows, especially around the "inner coat" part.
Also, try avoiding blending brush if you can, it makes shadows and stuff look "too digital" and out of place, considering you're working with lines mostly, it's too much of a contrast.
Also, the coat looks pretty flat, try giving it some volume, it loos like it's a piece of paper.
I must say, you did really good job with hands and the character overaly :)
Keep it up, i will follow your progress :D