Overall I'm super proud of this. The fire and sun came out cool, and the hair came out really pretty. Even though it took me ages to do the flats and color the lineart for. The lighting was a ton of fun to do as well.
I kind of have this head canon that Celestia special talent isn't the sun. She IS the sun, like the sun in a physical form. She can't really handle stuff herself because if she dies, that's gonna put out the sun and that's bad for everyone. This is also why she's long lived, it takes a VERY long time for the sun to burn out.
Nightmare Moon: [link]