Studying. Better love story then Twilight. Now for critique... Vision for this is clear and simple, Twilight sitting down to do some studying. Or write an essay? A book would have been more appropriate. Originality is good, basing the piece on one of her most well known aspects. Technique is great, the colouring is well done overall. I especially like the way you did the eyes and mane, plus the shading on both her and the background. Impact overall is good, the idea is fairly simple yet quite effective. I also like the Rainbow Dash quill and ink bottle, those were nice little touches. Only thing I will comment on is having paper instead of a book, it does not fit the title. That aside, overall, great piece
Vision - Not bad. The pose looks kind of good, but there seems to be bits of problems. The angle of the paper or how it is positioned, the angle or the perspective of the ink bottle, and how the table seems to look unbalanced. Not saying that it should be perfect, at least you can learn from these mistakes, unless you repeat the same ones all over again.
Originality - Haven't seen much artworks similar to this, though. The pose, the style, the environment and the facial expression makes it looks kind of original, as I have not seen much similarity to some other artworks.
Technique - A bit awesome. I can see how this was colored in the simplest and the best way possible, and how the hair is shaded is kind of realistic (despite being a painting). I can see how simple details can be that realistic, and I recommend artists to not use excessive details.
Impact - Its simplicity has given me a new way on how to paint outrageously yet simply. The artwork itself is telling me that painting is never hard as long as you don't go through heavy detailing and excessive amounts of complex parts.
Overall - I like it, despite some minor errors. Keep up the good work, for God will help us all.
Actually, Twilight using RD's feather is not my idea, I've seen it in some comics, though I can't remember the name. As for the style... I don't think I have any particular style, at least I can't see it for me, every piece is different.