More ideas from 331
Cosplay Automail Tutorial 2 by rockinrobin on deviantART - Use this tutorial and change the design to make any other kind of mecha-prosthetics or armor.

Cosplay Automail Fullmetal Alchemist Tutorial Part 2 by rockinrobin on DeviantArt // this could probably work for The Winter Soldier/Bucky Barnes with a few modifications!