I love the clean, stylized work you've done. Genius. A few marks;
The eyes seem to be out-of-character with the rest of the head. I really hope you add more to the head matching the style of the eyes (Organic Wavy Tissue), because right now it really pops off the metallic smooth look of everything else. Ferrock said something kinda funny, but I agree in a way. It kind of looks like a bird, with the center part of the face looking like it is some sort of metal beak. Maybe re-shape that? It's not just that it looks like a bird, but the curve on it is far from a smooth transition (Unless you planned it like that for the 'knives' theme). Not going to say anything about detail, or the back, as it's just a WIP and looks pretty awesome as it is. Just please don't overkill this in the end, just add a bit more organic tissue to match the eyes, and a little bit more here in there. Other than that, the simplicity of this is sheerly orgasmic for one who appreciates good tasting, stylish art.
7/10 for the WIP as it stands (As of Update 1. I will keep editing this post to make new comments, as I prefer to avoid flooding things around here.
I predict 9/10 in the end.