Okay, so the clip worked... but it wasn't enjoyable. So I made a pocket design shown in the pictures.
It's just a simple trapezoid, but I would suggest putting the cloth in the bottom LEFT corner instead of putting it on the right. Because I did that, my pages are now sticking up on the rivets.
Oh well, it doesn't affect the closing/opening/use of the binder... but if I ever make another one, I will redo that part.