I assume you are in the process of creating a lid for your casing.
Dont forget you will need to include a battery to power your system. You need to consider that in your CAD design. You want the user to be able to access and change the battery.
I notice that you have holes on the side of your casing. Are you going to bend the LED from where its soldered on the PCB board to have it go through the hole?
Please create milestone issues for review
Your CAD is looking good. A few notes: