SwanColorHD Case

SwanColorHD Case I am just trying out TinkerCAD and very novice at it, this is my first time designing something. This is as far as I could take my idea and it worked enough for me and I can't really spend more time. I implore someone else to do this better. The Tolerances on the ports on the back of the shell are too large and can be slimmed down if someone better designed it( just this way to account for soldering misalignment people may have (in my situation the HDMI slot is too tall and the usb port slighty long and too far to the right). The tolerances of the car slot and the top cover are very tight and you may need to sand slightly it you don't have good dimensional accuracy on your printer. Someone better at cad could probably redesign the mid bracket to hug the mainboard better and to cover the midsection of the board better and maybe screw down the cart slot to make it more secure, not sure what to do there but definitely can be a lot better. Assembly is as follows: Put every