Wow, that's super great. Must be movie Smaug rather than book Smaug, since he has no treasure embedded into his chest and belly. It's all very impressive, of course, but the head and the tail really take the cake. Good work.
Really excellent work, Shawn. First off, it's nice to see you're still putting bricks together out there. Haven't seen anything new in a while. This work is wonderful. I like it when I'm fooled by the scale of a MOC. This is just such a MOC. When I first saw it, I thought it was pretty small and I was marvelling at your parts usage to get such detail in such a small area. Then I had a look at the head and saw that this is actually quite a large work. Love the details, no matter the size. The tail is especially a victory. The head is very well formed and those eyes are malevolent. Nice work.
I have been working on a dragon of similar scale myself... I can really appreciate those wings, but as for the source material, I think there should be a scale missing/damaged? It would really make your dragon SMAUG instead of red dragon.