A great illustration. I like all of the little details that you have added such as the highly textured feel to the bottom right corner. It looks almost like it's made out of wood to me. The shine on the bottom lip of the jester is a brilliant example of how to draw lips. I may look back to this if I need a reference for lips myself. The same can be said for the teeth.
I have to say that if it was me I would have turned the shadows darker after I had scanned it in with some photo editing software and maybe turned the saturation up on that circular background and the blood. I just think that it might have made the details pop from the image more.
Epic work as ever.
Keep the stuff coming.