Yeah, it needs a proper jaw section, so the face-plate will attach properly. I'll make it so the face-plate is attachable and detachable by way of magnets. It'll look a lot more complete when I'm done with it.
Other than that though, I'm very happy with the rest, I'm glad I was able to use a real stone for the spirit stone, without it just being too heavy and falling out. It did shatter at one point, but I pieced it back together, can't have Slaanesh eating my soul, now can I?