Nice work. I'm gonna criticize a little since that is what I personally always want too for myselfMaybe you could change the composition to focus a bit more on the man and give it a bit more story. Also although I like your colours you can work on the lightning a bit (that's always the tough part ik). Look were the light comes from and make the smoke a bit more red there. Similar to this: msnbcmedia.msn.com/j/MSNBC/Com… I know it is often white over the lava but that is when you have daylight. Since your image is in a darker eniroment the light of the lava has more impact.