Usually i'm not really good at giving critiques in general... But i do feel like this animation deserves one. First of all, let me just clarify that i think this picture is amazingly well done, ALMOST everything about it looks perfect (at least for a sketch) and I applaud you for creating such a marvelous shot. And second, please just forgive my english. Seriously, it's really not the best.
However, i did feel like i should point out the one mistake i noticed, and how you should or could fix it (please don't take this in the wrong way). The problem would most likely be the ending of the animation, right after Fluttershy's beautiful smile, more specifically the hair and blanket's (or comforter's) dropping animation (on Fluttershy's head). Since the rest of the animation is based on quick moves and fast actions, the slow physics on the blanket and hair just doesn't seem to really fit there (besides, blankets usually tend to drop quickly, even tho it doesn't seem like it).
Anyways, i hope you don't get my critique in the wrong way, i really love all your drawings and animations, they look fantastic and I can't wait to see you improve more and more! See ya!