To be honest, I don't really dig the Chaos image very much. I'm sorry but it's just too strange. It's a very good attempt, yes, but the blur just doesn't work for me, and also his lower jaw appears longer than the top. I do like the fact that you only used reference to know what it looked like, and not to copy anything. I don't think you even had to post the source picture because I see nothing that was copied, and that is the only time you actually should be required to post a source picture.
However, the second picture (which is some creature I know nothing about), looks pretty nice and I have no issues with it. I think if you simply removed the blur effect on the Chaos picture, I would enjoy it a lot more. Or, make another layer and blue only the new layer, while keeping a crisp layer on top of it. This will create a much better effect IMO.
