Cordovan
So this would require pattern making, cutting the parts, hand sewing and finishing the edges, correct, no tooling or finishing? What you have shown is not a problem on either, I can draft the parts on CAD, cut a pattern on a laser, and so on, just need the sizes desired, "a scope of work required", and I understand that you would supply the materials, correct? Also this would be your design and I would agree not to copy.
Tim