Some Some twilight sketches for training.
Here the originals:
http://shelmo69.deviantart.com/art/Twilight-Sparkle-212809959
http://raikoh-illust.deviantart.com/art/Twilight-Sparkle-in-Canterlot-293738784
http://blackkaries.deviantart.com/art/Twilight-Sparkle-271672604