Wall Shelf (no screw)

I wanted a wall shelf to hold my prints and the walls in this apartment are hard to put screws in, so I designed this to use the large command strips. Should be easy to figure out how it all goes together, but if I'm wrong please don't hesitate to ask.

The shelf is 5mm thick, comes out from the wall 134.75mm, 127mm wide. The height of the back is 86.38mm. I have a 149.86 mm cube print space so I had to print the 2 files separately.