Something I did in around two or three hours. Ignore the messiness near the tail and on the wings >.<
What do you think of the shading?

The shading is the best it has ever been. I'm glad to see your improvement. I would make the orange/blue clash a little more gentle. Near the wings connecting to the body. I'm not crazy about the wing design on this one though seems a bit impractical. The shading is very much improved though.

body seems too unbalanced; work on dragonatomy
however, dragons don't technically exist so i guess you can make them however you want...

not a fan of the color scheme.

Tails provide stability. Therefore, they should be able to move.
If that tail would move, it would either take the wings with it, or rip something.
It's hard to imagine this thing flying. The way the wings are connected to the tail just makes it look impractical.

Judging by the shading, there are quite some bones in the tip of the tail. Good job on making it look heavy. This does, however, make the legs look a little weak. In comparison, that is.
Would this dragon not simply collapse or fall back? It would need its hind legs in a different place, or a hell of a lot stronger.

Not a fan of the head, it's a little derpy.