I made this video all about my Fluttershy Cosplay:

As mentioned in the video, I used a bunch of different tutorials to help me create this outfit.

Pony Ears: (I used version B) https://stitchandpink.com/2013/09/my-little-pony-costume-sew-along-day-5.html

Dress: https://www.youtube.com/watch?v=4ZpFlgD29nI&t=210s and https://www.youtube.com/watch?v=ooBNUXhkVWY

Bows: http://lifeunfluffed.com/make-ridiculously-easy-bows/

Adjustable necklace/lanyard: https://www.youtube.com/watch?v=N5Gvb_-h8yc&t=193s