I really like the styalized look of this, especially the angle. Not only does it make Bard look heroic, but also helps show just how huge Smaug is (who certianly looks very formidable!).
The only thing that seems off to me is Smaug's color, as he's supposed to be reddish gold, and not blue (unless this is taken from the Hobbit film, but I've read some theories that Smaug is like a chameleon, and his body turns reddish as he gets hotter). Also, I find it a bit puzzling as to what the archer in the back is aiming at.
T. Rex Smaug. Otherwise it just got perfect. Blue scales however, give me a bad feeling about the upcoming movie, since the scales around smaug's eye also seemed to be blue, although his hand seemed red, and his tail orange.