First off, let me start with your style. I have to plain out say, I love it and in this case I feel it really does lend itself well to what you were trying to accomplish in this piece. I think you've done a fantastic job with the pose, the facial expression and the general stylized nature - you captured Michael's presence very well. I also really love your shading choices, even though it's almost like minimalist cel-shading you've got a nice sense of depth around the wrinkles.

A couple things though... Don't get me wrong, this is a lovely illustration, but I feel that it could be so much better. You could have shown a bit more of your skills, of which I know you totally exude. What bothers me most, is the background. I know all too well that backgrounds are difficult and you may have wanted to go with a foggy-creepy-zombie atmosphere. However, I feel that there could be so much more to this, than just a few zombies in the background. For instance, you could have a group of zombies doing a particular move from the thriller dance or maybe a tombstone, or some skeletal bones.

Also, Michael in the foreground is suffering from what I like to call "floating away in nothingness." I know I'm totally hypocritical by giving this advice, because I'm totally victim of it too. I think though, that it needs just a tiny hint of a horizon line to add just a tad more depth.

All in all, this is a lovely piece - I especially love the glowing eyes. They're haunting, in the best way possible. You've also made good use of space in your composition. Just keep in mind, that you should challenge yourself just that extra mile when doing backgrounds. I know you're more than talented enough, just remember to strive.

I think you've done a wonderful job and I know it would have made Michael very proud had he've been able to see it. Legendary work for a legendary man.