wow, the model looks excellant. As you said, you still have a lot to do and I'm not sure what you're planning but I'd advise distressing the metal areas more as they both look a little clean and fresh in the picture. Also the skin, while painted/blended exceptionally looks a little hale and healthy to me. I can see the sunken, sickly thing you've got going on but I'm not sure if maybe it needs a tinge or a glaze of a slightly 'off flesh' colour. Just my opinion of course, as I said at the beginning, the acual painting is fantastic
Thanks
Corai