I like your efforts so far, but I am having a really tough time getting the "fighter" girl. When I think fighter I think of a fighter's pose, weapons, something to imply violence. This waif of a girl seems to be totally calm and non-threatening, with nothing visible to imply she's capable of violence under that giant jacket. Its still early enough to really try push the concept a step farther to make it stand out.
That's a definite improvement, however I think how you render out the garments, etc is really going to sell it. Any ideas? What about like cooling magma if you don't want to do just plain old fire? A thought...