Well as usual I added a smartass comment but I figured I should try to actually be of some use for once. I've edited the image to remove the moon, since it would be a background light and thus cast her whole face in shadow, not just her right side. I tried my best to remove the last artifacts from the sled as well as the outcrop. Added a few more stars. Also the armour is clearly lit from a bright light source (daylight from a window most likely). I've tried to diminish that a bit by altering contrast, saturation and hue.
Edit: Man I can be such an idiot at times... I of course meant no disrespect Alsark. You did a splendid work of cutting the woman out of her original background, and your choice of new background was excellent. I would never had thought to blend such a vibrant blue winter night with someone in a full plate armour. I just polished it a little to remove some annoyances. Sorry if I came across as more fool then usual.
Edit2: That is an axe she is holding right? I was tinkering a bit more with the image when I realized that it perhaps is supposed to look blunt. Is that a warhammer?