The lighting and sense of atmosphere here are beautiful! I seriously love the way you handled the light, and the fire especially. As for the composition, it might help to try elongating the canvas vertically and showing more of the foreground, which would also give a little more space beneath the person at the bottom. That character adds a really interesting focal point, but it's so close to the edge of the picture that he gets a little lost. With more breathing room under that figure, and cropping down a little from the top, it would bring him up a little in the composition and (I think) help bring more visual balance to the piece. Gorgeous work though!
Thanks so much for taking the time writing this. Really glad about help like that^-^! Now that you say it, he is really a bit lost down there xD Should get more into the habbit of planing these things out better in the beginning