well, a lot of people ask me how I did it oO", and I decide to write here.
My English isn't very good, if there's any problem please don't hesitate to ask^^
The materials are:
Craft foam, Carton, Polipiel (same as leatherette, false leather, seems vinyl, etc.. ^^U) red, Contact Adhesive, Velcro and red wire.
(I recommend that if someone wants to wash the armor, skip the card and put double foam)
First, get all the pattern pieces and draw it on the cardboard. After cut the cardboard.
Doing the same with the foam, and paste it above the board with the contact adhesive and let dry.
Meanwhile, draw and cut the patterns in polipiel and sew it as a cushion, but left a part without sewing 'cause you'll have to introduce the foam.
Well, when you introduced the foam, sew the last part and take the red wire.
With the red wire, board all the armor. Why we don't paste it? 'cause the red wire give more "old" aspect to the armor, with rudimentary methods xD Ready you 'cause your hands'll shout in agony of pain!
Well, when you board all the armor in one piece, take the velcro and paste it on the back of the belt.
We did it, but if you prefer to attach on other part, you can try new forms!