Hello there! I would put more examples of art, because it's really hard to say much about one picture. Mostly because you can be good in drawing that particular pose/face looking forward and not so great in other things and we can help with it.
Judging from that picture - I like it and everything looks pretty nice! =) Love the glowing effect on weapons.
Her limbs are on the longer side, I would probably try to make them shorter, but the proportions are good and so it doesn't look bad, since she has a very anime look. And I suppose the background here is just sky, so I hope there will be background on other panels ^^