Backrest chair

Im in the beginning of the process to produce a stand up chair for customer with back problems. It will be made out of bend plywood in multiple colours and materials options as well as different set options. My ideas quite clear in my head. It’s hard to bring it on paper.
I would need drawings I can go to a furniture manufacturer with and also set up an homepage for market research.
Firstimer in any developing so don’t go to hard ;)