Lattice by design

Tried to make an add-on for my lightbox, so that I only have to set my camera on it and snap pictures. Saves editing time on photoshop and keeps still. I think I have to make it a bit bigger and sturdier. Since the cardboard is flexible, I don't get leveled shots, which isn't too bad, but...the idea is not to have to use photoshop later on to resize, rotate, scale, and level off everything.