Elysian Enmity

I love the art style here, it seems a bit disproportionate but fits with the overall mood. The contrast of soft curves and jagged lines really shows something. I like the idea of Luna coming to Nightmare Moon as a shoulder to cry on rather than Celestia.
The big things that strike me- Nightmare Moon's shoe, the black water, Luna's tears and the way it all glimmers.
Now I'm half asleep, can't go to bed, so I'm hallucinating slightly. Nightmare Moon's wings- this picture is so vivid that they actually wrap around Luna. That doesn't happen so often. Usually characters just wiggle and blink.
One thing that confuses me is their position in space, but it's more or less insignificant- They can float aimlessly where they like.