I'm sitting here listening to Duel of Fates from the Star Wars soundtrack, and let me tell you, every artwork of pony I'm browsing on DeviantART suddenly has climactic, intense undertones that weren't there before.
I like this piece, because it reminds me of the fact that I think it'd be kinda cool to see the monsters of Equestria progressively become more and more dangerous. In other words, more powerful, deadly creatures are introduced (Tartarus monsters getting unleashed, anypony?). That would free up some character development on Fluttershy's part a bit...after all, all of the former 'monsters' that were known as untameable, wild entities, would suddenly be susceptible to the maturing power of the Element of Kindness.
Which leads us to this Fluttershy walking up out of the Everfree with a fucking army of the deadly creatures we've seen in the first three seasons.
So yeah. Fantastic job! And for the record, I love the wing gesture, myself :3 Some find it confusing from the comments it would seem, but now all I can see is her signaling her army of impending slashing claws against any new S4 enemies to halt, as they exit the forest .3.