This is my attempt at Smaug.

Painted in Photoshop CS2 and a Whackit Intuos

Thanks for looking

P.S For those who haven't read the book, Smaug had a belly encrusted with treasure which made him indestructible, or so he thought, because on his left breast was a bare patch which became his Achilles heel. Bard the Bowman shot an arrow at this patch and killed the cocky dragon.
So the jewels on his chest/belly are not my idea Smaug wouldn't be Smaug without them.