Very nice, love sets sor of that. Those style was kinda popular in '11 or so
About set:
Head texture is very detailed, but the face seems too small and horns are not looking like horns, I think you need to try another scale of picture and bottom is seems a lil bit empty too, you prolly should add there some muscles or so
And abot right leg, I love it, but sapphire part seems a lil bit blank, if I was you, I'd fill it.
And actually you need to recolor another parts of body, for make it in one gamma color, that would be the way better I gues
Anyway, great work tho, keep it up