Lovely, Now I just got the itch to draw him too! I like the background and texture you set there, really resembles the atmosphere of the show.
But I do remember his body on the overall was a little larger, limbs being longer, and his shoulders were wider.
I reckon you were trying to apply your own cartoony style to it, but I kinda feel it doesn't suit him very much. I think it would've looked epic if you've drawn it in the same style you used in your "Jack Skellington" piece.
Keep up the fine work! I'm looking forward to see more. :DDD