I dont think that there's anywhere near enough detail... sorry. Everything seems flata and uninteresting.... The Head which is actually pretty well modelled from what I can see is just lost completley in the darkness. The blood is quite nicely done but again a bit flat. The tubes out of the back of the head need a lot more work they look like bent cylinders... which I guess is what they are. This could be a cool piece but 3 hours isnt enough time to spend on it and IMHO it's not up to going in the gallery.
Please dont take these comments personally I'm just trying to help you out constructivley. I would start a WIP thread and take this as your starting point not finishing point
Technical Director - Framestore
Currently working on: Your Highness