Summary

I made four adjustments to http://www.thingiverse.com/thing:554259.

1.) Removed the nose guard so that I could reach in and touch the screen when necessary.

2.) Added two more button holes so I could reach all three buttons on my OnePlus One phone.

3.) Added little grippers to hold my phone clip (http://www.thingiverse.com/thing:634492) as a permanent hinge.

4.) Deepened the headset by 15mm. This was because when I adjusted my 5cm focal length lenses appropriately, my face was unreasonably close to them.

Perhaps it will help someone else as well.

Also in the picture: my customizable lens clip here: http://www.thingiverse.com/thing:634507

UPDATE 2/10/15: I have made an updated version that will fit 5.5" screens such as the iPhone 6Plus and the OnePlus One phones. Find it here: http://www.thingiverse.com/thing:670687