Expectations Cover

This is cover art I did for [link]. Their synopsis says

"One morning, Twilight unexpectedly finds herself with two feathery wings attached to her back, with no explanation for their sudden appearance. While trying to avoid detection, she tries to figure out what has happened to her, but as more and more things in her life change without warning, she realizes that her days of normalcy are numbered. Difficult tasks await her, from figuring out what to do with herself and how to deal with her friends, to facing new challenges and trying to convince everypony that she’s still the same mare she was before. As much as she tries to keep everything the same, most of the things happening to her are out of her control, and she may not be able to handle the never-ending cascade of new responsibilities, and new expectations...

“...some ponies just aren’t cut out to handle the responsibility.” -Twilight Sparkle"

I'd really appreciate honest critique, especially about proportions, the mane, the eye, and line weight.

Season 3 Edit: First off, not my concept. Second, this was done before Cadence, and way before the Twilicorn/season 3 finale.