This drawing, and its fictional character, were inspired a bit by the following picture:
 

 
Here is Twilight Sparkle, cosplaying as a fictional empress inspired by her in some of my stories. In spite of her majesty and her destructive powers, that empress is as arrogant as Nightmare Moon, and uses her devastating magic powers in her tantrums. She, like Twilight, might be an amusing character.
 

 
The flag that she is holding represents the cruel empire of EqG-clones that worships her, as a goddess of war and knowledge.