Nice piece over all.
I think her head is too small. You can increase it quite a bit... allowing you to make the detail there a bit more obvious.

Pulling in the armor would help define her figure more.

Lastly add a lot of highlight to the sword and arm that is in the foreground.. much like the leg that is well lit, that will help it pop from the background that is her torso.

Good luck.
I'll have to go check out the site..