It's a beautiful painting and I love fantasy it's one of my favorite subjects. As for critiques, her left leg by her sword hand seems a little off but is not that noticeable but her right arm seems as though it could be a little thicker between her shoulder and the gauntlet to match her other arm witch is much fuller, anyway I hope that helps.
The only thing i can see that maybe is a little bit of, is that it looks like her left leg is skinny. Although its anatomically correct it gives me that impression. Maybe its the way the fabric is on her leg, i don't really know but that is the only imperfection i can see.