I think you've been underrated. These look great. Even though the picture is a bit distant, it's still very obvious that your attention to detail is top notch. The colour scheme is perfect for a dark and menacing mini...without being boring. Nice work!
I like the color choices, especilly the sort gray toned skin. It looks almost tinted with purple (that might just be the picture, but...) which I very much like - it adds a bit of extra depth to the scheme. Unfortunately, the picture is a tad small so I can't be sure of the blending work and details.