Look not trying to offend you, you wanted honest opinions, rather than just compliments. So here; I really like the posing you did, its really smooth and well done. The gloss is pretty decent, but it does not fit with the lighting. The lighting is really bad. It looks as if you put a light in the back, and nothing else. The avatar is too dark,no not the skin color and does not fit with the gloss/lighting on its back/sides. You should make it brighter in the front, it would make the render a lot better! I suggest using a sun light. Ok, last thing. The lighting on the left side differs from the lighting on the right. the one on the left is red, and the one to the right is blue. I don’t know if that was your intention, but it looks as if you just used lights of 2 different colors.
Good job! The end product is pretty impressive, just the lighting wasn’t used properly.
Keep up the good work!