One little piece of constructive criticism if you don't mind. The dragon looks too 'cut paste' He's moving (presumably at high speed) Perhaps trying a motion blur filter and just a hint of blue blur to put him in the distance. The mist from the Blond's breath does help to add to the effect of layering.
I don't mind constructive criticism at all, but it's a little late, lol. This is one of the first renders I ever did, when I didn't know crap about the program or even much about Photoshop. I could criticize this picture all day, believe me. I've thought about going back to some of these early renders and re-doing them, but haven't had the time or the inclination yet.