Now i'm going to preface this by saying a i'm a newbie as well but the shading in the bottom have doesn't match the top half. I'd say you'd be better of with a more subtle shading scheme in the skirt. Also i think a white background isn't a good way to present the sprite it gives it a weaker silhouette then it actually has. The design it's self is quite cool. Reminds me of dark souls a lot.