Now, I'm no Pro, i can definatly see a dramatic change in your art. It's deeper, Stronger, and heavy. And to me, i only use those words to describe something beautiful; your art is wonderful. The Shading flows gently, the anger and the despair scream out to me, which is good. Also, your story line is grabbing hold of me like that mind-disturbing tree thing that got Luna. I expected a Nightmare Moon to be the main antagonist, but showing the fact Celly with some real power is so, gratifyingly, much better.
Excellent job! Jolly good Show! I have high expectations for the rest.