Useless Box for Tower Pro Servo

Edit 17/11/17: I have added an extremely bad wiring diagram to the images. Hopefully it's clear what I mean by it - let me know if it's not.

This is a remix of the Useless Machine by ericthepoolboy, modified to use the super common (eBay is full of them) Tower Pro SG90 micro servo. I modded the main box to fit the servo, then adjusted the activation arm as well. The only other changes I made from the original was the addition of some 'mouse ears' to the main box and moving lid. These 'ears' are easily removed after printing and help stop the corners lifting/warping on these parts. Worked great for me.
The activation arm could be a little prettier but it works well. I might revisit it at some point and dress it up a bit. I'm working on having a hand come out and flick the switch instead of a plain 'rod'.

I'm new to designing so any feedback is welcomed. Have a great day!

Thanks to ericthepoolboy for letting me use his design!