SD Card Key Ring Fob

I want to carry an SD Card on my key ring for 3D Printing reasons, so I printed off one of the source Things to do the job. However I could not get over the fact that this design places the card perpendicular to the keys and other items that hang on the ring, and thus this caddy hung at an awkward angle.

So I went about fixing that by redesigning it to sit the card flat against the keys. The only thing that is really the same as the source Thing is the wall section and internal size, but othe