very well drawn. some minor flaws: helmet could use better shading on the light portion, and the 'cheek-guard' on the right of her face is a bit too bright, considering the light source shines from her left.
as others have said, you should zoom in much more to allow it to better fit wc3. this is of course a personal preference, but a goal of a wc3 icon creator should be to create works that fit the format of a wc3 icon nonetheless.