Bookmark Display Holder

I've printed a ton of the great bookmarks designed by C3D, so I wanted a way to store and display them. This is a modular system to accommodate however many you'd like to link together along with end caps that clean up the look. I may try designing some other caps that may include interchangeable price cards or other ideas. These accommodate bookmarks up to 50mm wide. I went with a 0.3 tolerance which is a little loose but it was designed to easily go together and come apart (if you pick up from the left, you can lift it all together) This is pretty much my first model designed start to finish so please, any constructive criticism or tips are more than welcome.