Paris Connection screen card tray

We have the board game "Paris Connection". It has cards that act as screens to keep other players from seeing your pieces. Last time we played, it was commented that some kind of tray that holds the screen and the pieces would be nice so they can all be moved around together. Here's my first shot at it.

If you print and try it, please let me know if you have any suggestions to improve it. I think it might need a deeper slot for the card but I haven't decided.

I've uploaded a file that