She looks so beautiful. That mane, starting like regular and smoothly changes to swirly, magic filled nebula. I live when it is drawn like that and you have shown who does it the best. Shading is perfect, it gives the full depth of features and establishes the light point. Rarely it is done so expertly, with such attention to the details, like wing shadow on her neck. Armour is superb, I am always struggling with it and you have executed it marvelously with engravings and reflections underlining this combat design. I love how the separate parts meet, how their thickness can be seen and how its design in general shows that there is no messing with the one that wears it. Horseshoes and helmet kept in that style only add to its beauty. I like how the wings fold, I like the pose and expression, but I am lost in those eyes of her. The are so beautiful, so deep and thoughtful, I could stare into them until I am completely consumed by the darkness. The background colour is chosen very wisely, it gives a good contrast that exposes the dark nature of Nightmare Moon, those strokes keep it from being flat, give it some depth. Marvelous work, one of the best Nightmare Moon fanarts ever.