Neither idea is original. I found both, in multiple styles, on Pinterest and other decorating/craft/diy websites. I have not seen any pictures where they are hung together.
The frame is off the clearance aisle at Hobby Lobby. If someone had made a video of FM2 and I trying to load this seriously over sized frame into our RAV4, we would be YouTube stars. It did fit, with
After applying primer (from a spray can to get into all the nooks and crannies since neither the deer nor frame were smooth), I applied spray paint to evenly coat the items. Then Chief and FM1 attached chicken wire from a home improvement store to the back of the frame with a staple gun. Then they hung it for me while I baked cookies.
The cards are attached to the wire with binder clips. And it is done!