I am a huge fan of using a talbard made out of suede (or brushed cotton style fabric that looks like suede) with pieces of leather riveted to it. It's fairly flexable, moves with you, and looks decent. You could also probably use linen for the foundation but it may not be worth as many points. Stalk thrift shops for the pieces. That said, my first set of IG armor was a brushed cotton lined in what looked like sherpa wool. It came already lined from JoAnns and I had a 60 percent off coupon, so it wasn't that expensive. I put it together in two days since I could just cut and hand sew the peices. Max scholar armor with a vest, skirt, hood, bracers, and greaves. I still use bits of it today along with my super shiny LeatherStorm armor.