i can see you have worked hard on this but there are a few things i wanted to point out:

why are they glowing so much? isn't the fure only a tiny big shiny?

the face of shadows looks a little... thin, the eyes shouldn't take up his entire face, more like 90% either that or the mouth (the entire bottem part of the face) could be stretched out a bit to go past the eyes, not by much but still just past them.

that's the major things i can think of, anything else would be nit picking, it's a good picture overall though!