Infinity Light Cube with screw holes

I was having some trouble with gluing all of the pieces together with the original model; wasn't really confident about my ability to keep straight edges either. I added threaded screw holes for M2 Hex screws (I think I used 16 mm's when I put everything together). I didn't upload the diffusers since I used the stock ones from the original design. I was getting stumped on how to add a countersink on the threaded areas with the rectangular cutouts, so I took the lazy route and just added chamfers instead. I can't seem to find the .f3d file for the screw access cover, so that is why only the .stl is there. I still haven't soldered everything together yet, which is why I don't have any cool action shots (sorry), but everything worked great. If anyone wants to improve on this it would be much appreciated, I am still very new to CAD design and probably could've designed some things better. Thanks to the original designer for making this cool lamp. Original design and other necessary files located at https://www.printables.com/model/41750-infinity-cube-light (Also: please excuse my naming conventions, I am still hammering out a disciplined approach to that, so you might have to load some things first to figure out what they are :-/ )