Good job, a few suggestions though:
You should try to break your boundry, venture to places you've never been before, ie the adjustment menu, which is very helpful for making colours and lighting blend properly, also the background, minus the smoke, is pretty boring and 'flat', as is the foreground, perhaps try one of exmachina's tutorials (found in the resource thread) to help teach you about pretty much every aspect of a tag.
Definetly not bad for a beginner though ; )