DnD Spellbook Dice tray

I've been wanting to design something for a while so I decided to design something that i thought would be useful to my dungeons and dragons group. The design is supposed to resemble a spellbook and is able to serve as a dice vault and rolling area, personal minature storage, as well as a player character sheet holder on the back of the cover.

A Test print is still required.
The dimensions of this design are 220mm wide x 220mm long x roughly 50mm high.


The intention is to place padding within the rolling area, dice vault and miniature storage to prevent scuffing, or breaking over time.