Pssst! She's in the blank-flank mode. I feel like whole picture lacks of shadow under Pinkie to level whole image... but the background is very dark and I won't see the difference, even with shadow. Try lighter background next time.
Thanks for letting me know about the cutie mark...I always seem to forget about that >.>
Also, the background was going to be the cave from S3,EP3 but I got too lazy and just decided to do this. As for the shadow, I need to fix that when I have my drawing tablet...i forgot to re-draw the shadow for her ~aruigus808