This is such a cool dragon. It must be the size of a whole mountain, and able to oversee the whole land underneath it at once when flying. The again, it's not really a dragon but only a shadow of one. So it won't so much oversee as it will haunt and instill fear into those who live where it flies. I like it a lot.
Nice! Good job making the colors more intense in the foreground and progressively less so as it gets further away- always a challenge for me (the few times I've tried landscapes). I'd just have to say though that the dragon would be the size of a mountain according to the laws of perspective (if that was your intent, then wow cool what a huge dragon!) Also really like how you made the clouds/sky sort of curve overhead (with hints of green too!) it really has great composition and direction which ties it all together.
In the thumbnail, I was thinking it was a digital piece (which I have nothing against), but when I saw it was traditional, I was much more impressed. This is amazing. The scenery takes my breath away. I love flowing landscapes with majestic mountains and forests. And I love the detail in the grass.