"It is common for most young colts and fillies to have a nightmare every so often. But Luna had recurring nightmares, terrorizing her subconscious as she slumbered. She would constantly awake, and end up sobbing into her sister's warm embrace about 'the big bad alicorn on the moon'. Little did anyone know that as these dreams started to progressively become more and more bloodcurdling, it was the demon within that was slowly tempting her to give in."
/ LOL END OF CHEESY STORY THING
It was a pain drawing this because the stupid program kept getting a screw loose and turning off without warning. Through trial and error I was able to get this finished. @_@ So anyways, to my headcanon I think Luna was possessed by a something.
Sketched on paper Took photo with mah phone Finished in Smoothdraw One hour
I can 't really say I know much about dark pictures. Still I think there is someting you should know I can see you are trying to the the dark expression through here. No doubt about that. But you don't want to blind us by darkness either do you? From what I've learned on deviantart dar k colors can be quite enough to mae the whole nightmare theme you're aiming for here :3 hope I wasn't too critical