Hooooly crap, this is fantastic - I almost want to write a fantasy novel now, just to hire you to make its cover, haha!!! Absolutely love the composition - the sense of urgency and speed to her stance, the fire in her eyes, and how absolutely freezing it looks wherever she is with that swirling, icy mist. Just beautifully painted <3
every time you upload a new deviation it seems as though your style is constantly changing. Not that your artwork wasn't awesome already but, it appears that you are going into a new direction with your work and I LIKE IT!! Just keep up the good work, you're amazing at what you do and I look forward to seeing more.
I'm amazed by how you've improved in painting faces! The shadows, lighting and colours are fantastic. I love the overall foggy mood and particles in the air are some very nice touch. I only think that her expression could be more significant, with more energy inside (I don't know hot to word it better ), but that may be just my personal preference ;D Awesome job!