Quoting Kelley here, you need reference pics. Go to the store, ask the staff on what's the best option. Also, keep in mind how much you want to pay. Sometimes you can find a fabric that is not technically right but will work because the color is spot-on.
Goku - Dragon Ball Z (Otakon 2014) 0%
Bluezam - Beet the Vandal Buster (Dropped, Eventually) 20%
Colonel Armstrong - FMA: Brotherhood (Eventually) 40%
Zoro - One Piece (Eventually)
Ippo - Hajime no Ippo (Eventually)
Kaito Yashio -Robotics; Notes (Otakon 2013, Completed)
Free - Soul Eater (Otakon 2013, Completed)