Raspberry Pi 2 Overclock Case

This is my first CAD design and thingy upload, so critasim is appriciated.

I designed this case because I wanted a case that had the fan mounted inside. I use this case primarily for use as a multimedia machine, but can be used for anything that doesnt require access to the pins inside.

I am looking at redesigning it a bit so that no screws are needed to hold the Pi instide the case and to be three parts not two for easier printing.

STL files are loaded in the orientation I use to print