Firstly, the pose is way too static for any interesting styles or whatsoever you intend to do with the art on a later stage.
Secondly, as stated by the others, it would work better if her arms are bent a little. In comparison with her body, the current arms are too stubby and short.
Thirdly, that is not a proper pose to hold a mace. Personally, it looks extraordinarly weird in a sense that it doesn't makes much sense.
Fourthly, is she wearing a push-up bra? If not, then make the correct amendments.
Last but not least, it's good that you're trying to focus on her hips and waist. However, don't you think that the curves are a little too much? Especially for the hips and the buttocks with the added mass at the front. You do not want to over "Sex-ify" your character too much.
It's a nice try, however. Do keep up the good work.
P.S. Extra credit and values if you realized her clothing folds are way too unrealistically placed and that her hair carries no mass in comparison with her skull structure.
One common mistake for most artists is that the hair isn't part of the skull or the head. It is above and wrapped around the head itself. I do not see why there shouldn't be a space around it.
In example:
[Image: http://i242.photobucket.com/albums/ff309/Nyaruato/Alpha1-2.png]
Notice how her hair wraps around her head instead of being stuck to her skull itself?
Give the clothing some space too. Unless the sleeves are tightly wrapped or the material of the cloth is made from very soft and silky materials, I don't see how would the sleeves stick to her body like that.
No matter how would a Becky Witch Dress would look like ingame, when you're drawing it anime style or realism, please do be sure to make sure that the clothing folds are there. For tight clothing, the clothing streches goes left and right, towards the breast portions, connect soem clothing folds around the larger diameter of the breasts to the ribs portion. This would give the sense of tightness, which makes sense if her breasts are being pushed up by the clothing. If she's wearing a brassiere (?) underneth, then you'll have to make tiny markings to show that too.
Besides, I don't think any girls would wear a bra under tight clothing like that ;)