For Lightning Farron's arm bracers, I used many picture references to see exactly how the design goes and found that it has these 3 basic shapes (3 larger, and 3 smaller). I used two different sizes, so that they would appear smaller as they ran to the wrist.
I used these shapes for most of the arm and hot glued them all onto red linen fabric. All armor pieces were made from 2mm craft foam. The straps have velcro to hold them together, but I attached some vest buckles to make it look more accurate to character.
This wig is definitely pink! I promise.