i love the 3ds boxes, im considering doing some dvd sized boxes next, maybe a few for ps2 and xbox 360. unfortunatly there i have a feeling they may require 2 sheets per box.
i must say i really like you idea of putiing the spine in the middle of the template, all of mine had a flap for the spine that was taped closed. this looks alot cleaner in the photos.
the OoT 3d box look awesome in the photos