Hi! It's a great piece we have here so it's difficult to write a critique. i just wanted to say two little things that bothered me in your drawing. First, I think that magneto's arms are a bit too long in comparison to his body and his haed feels a bit shrink... Second, I feel that Xaviers legs are bit strange, its not really bothering as he's is crippled but i think you shouldnt have drawn his right leg behind the wreckage because it interfere with the understanding of his pose. I would put his tibia in the foreground so we could see that his leg is completly folded. The rest is excellent and the colors are great! I particularly like your smoke and flames effects. Hope it's clear to you as my english is not so good, and that it'll help by the way. See ya!