I wasn't kidding when I said I make all my works on MS Paint. Her wing was constructed through clever use of the marker tool.
I considered adding the holes in her legs and hair while making her horn a bit crooked, but that would just be extra work to make something LESS cute.
I'm not sure if I nailed the hue of the eye... then again she has 4 hues in there to begin with. I figured yellowish green would suit her pestilent nature, but keeping the saturation high enough to suit an innocent foal.