That sure is one sinster looking fella. I can't find anything technically wrong with your painting on this mini, therefore all I can do is praise you on a job very well done:)
Of all the pictures posted, this was the best one as far as keeping the colors to a minimum. I like the base, its busy yet doesn't detain from the model. The skin tones are very nice, not too fleshy like I've seen on other minis. The things that knocked down the score were first off the hair parts. They could really be improved by some more highlighting or drybrushing. The bones are also too clean for my likings, but thats a personal thing. Last, but not least, I can see the transitions on the shoulder plate. Thats not a major thing, but tipped the scale down to a 7. The head also seems too bright, it distracts the viewer from the rest of the model.Have fun!
definitely my favourite of all your jobs! wonderful effect on the sholder-plate, looks great. A little matt finish wouldn't harm him though. Even your bright style ain't bed on this evil mini... Technically good, and i like the conversion. Good base!