Did this as for an anon's request, he was looking for an alicorn Twilight Sparkle in sort of an aggressive stance. I probably could have gone more aggressive with the pose but I'm okay with how it turned out.
Roughed up, and the hair in front of her neck gives the appearance of negative space. So it looks like there's a hole in her neck at a glance. Other than that, it caught my interest because of the good colors and effect. Just work on the proportions (VERY important in pony drawing) and getting that fire more... fiery.