So, you wanna cosplay an Organization 13 member but you can't afford the coat? Well, don't go throwing your dreams out the window just yet! There's still hope! You'll just have to modify your costume a bit to incorporate the fact you won't have the long, flowing coat.
(I swiped this offa dA ^^;;; so all rights go to the original tutorial maker)

Optional
You can switch the zipper on the hoodie for a much larger one, this would be what I'd do since Org. Coats generally have giant zippers..
Well, Enjoy little Nobodies~ Happy cosplaying.