Working on the golden border for the breastplate! (Not glued on yet, just laid on top to test the look) I wanted the border to be raised, so I glued 2mm foam to the backside of this fake leather and carefully folded the edges over to get a clean look. Will have to paint the leather a bit since the colour isn't quite right (maybe I should stop ordering fabric online). Oh, and the bottom is "incomplete" on purpose - it'll be covered by a belt, so no reason to craft a full bottom border.
(Swipe for WIP) Finished the base for Templar Assassin's breastplate! It's pvc board (Sintra) + worbla cups, covered in navy jersey. I used double sided tape to stretch the fabric over and it worked super well! I was a bit worried with using glue cause it messes up the fabric, but this was a really good solution.