Overall

Vision Vision

Originality Originality

Technique Technique

Impact Impact

I really like this picture. The colours you've chosen harmonize pretty well with each other. I also like how you have done the reflection in the water and the shading overall. Also i'm a huge fan of how you highlighted her hair.What i would like to mention here is that the horn doesn't really reflect the light that comes from the magic-ball. It should be more toned with the light it emitts and it should probably be a lot brighter. Another point are the water splashes. I think they are pretty well done, but i don't think that they are necessary at the tail. What i could imagine is that the water particles get entrained by the wind the magic causes. If that's the case, the mane should be in motion though.The next thing is the diadem. To me it looks like it's not completely fiting to Luna's head. It looks kind of flat to me and seems to have the wrong angle for her to wear it. Also some more highlights caused by the magic light wouldn't be wrong at this place either.The last things i'd like to bring up here are the crystals and the background.The crystals are very well drawn. But since you decided that they should be brighter than the rest of the background, it would probably be better if the one next to the magic wasn't so near to it. It's just tiny, but it influences the contrast.To the background: The background itself is great. I couldn't find anything but that the colour you have given it is pretty similar to the colour Luna's wings have, so if you look in her eyes, a part of the wings seem to just blur away (especially the darker one). Also here some brighter places on the wing could help. I wouldn't do anything with the background colour, because it fits perfectly to Luna to have a night with almost the same colour as herself in the background in my opinion.So, yeah. A wonderful picture you've created here. Keep it up.