For @Mysttify 's contest (I think?) Pony Wars thing.
The story behind this is... Well, WhiteNoise doesn't have a cutie mark because when she was young, her family took a break from Canterlot and spent a few days in ponyville as a family vacation. Noise and her sister didn't know about the Everfree forest, and were playing a little too close to it. Her sister accidentally kicked the ball into the woods, and Noise went to go get it. A creature (idk what yet) attacks her as easy prey and grabs her flank. Her sister pulled Noise out of its grip with magic, and she was left with scars that stopped her cutiemark from ever forming. The drawing is happening waaayyyy farther along her life where she's Head of all the Royal Guard. She's assigned to train Discord how to defend himself without magic, and to no one's surprise, they don't exactly get along.
I'll write a little story in the chapter when this is done explaining what's happening in the drawing. ;)
