Quiltforme

Good morning, I made this French Braid quilt back in March for my friends husband and I cannot for the life of me figure out how to quilt it. I am so at a loss i have taken classes online with Craftsy and bought different books they were no help with THIS quilt. I really do not want to do the meander or SID I would like a fun creative pattern but I have not seen any French braid quilts with creative designs. The ones I have seen just outline the rectangles and feather the boarder which is not bad but I want something more... Thank you for your help and all your ideas

BTW the quilt is a queen size