I love the composition and story that is being suggested here, for me the suspension of belief would be stronger had you managed to produce a matte lighting effect on the castle/dragon. The mix of medium styles detracts slightly from this cool concept.
I dont know what it is about shots of small statues. They dont do a whole lot for me personally. This shot probably would have benefitted from less smoke. The detailed blue smoke strands are nice but all the diffuse gray smoke that fills the rest of your black space is too much.
Nice idea, but would be better if the smoke was sharp and the castle figurine was less in focus. Also the smoke enveloping the castle would have added more dimension. Nice work getting the moon (or facsimile) in there.