i think the problem with this model is that the components for the most part are painted well, but the color choice is off. the skin and the armor are very close in color, which muses together the whole model. also the skin all around seems to be different and so does the cloth. it would be better if you made all of the cloth one color, like you painted some black and some a cloth color which is also very close to the skin and armor. it just makes it so hard to look at and see that everything is well painted. then you made the cloth he is waring dead skin, but the model is already covered in skin. it would be ok if it was dead skin of a totally different color but its the same color which adds less and less contrast.
i will give you credit, this is an extremely hard model to paint. to even come up with the right colors. and you finished it which is great because i ended up throwing mine aside (mostly because his spear broke) you are certainly on the right track because the components are well done. you just need to think about what you paint where more to optimize contrast and pleasure to look at it. hope im not to harsh, only the upmost constructive crit is ment here.
keep painting, judging by this and your gallery your on the right track.
-Ansel