Lovely painting CB Design. The colours really pop. That's one mean looking dragon, but I question whether he deserves the tile of Smaug.
Smaug The Magnificent spent so much time lying on his huge hoard of gold and jewels in the halls under the mountain that he developed an inpenetrable coat of jewels like armour on his belly. The only soft spot on his under belly was his arm pit. I think you need to add some bling to your dragon if you're going to call him Smaug. Or maybe this is young Smaug, teenage Smaug??