Two Students of Architecture - Test Cutting

I've always liked this image, but having completed two cuttings of it, the first in "Two Students" at 8x10 out of paper, and now this one, 16x20, out of mats, I think I may hold off creating it full size, at 30x40.

It is to date the most complex cutting I've done, and I 

think it's the one that has the greatest artistic meaning.

To the right is an off-axis shot of the same piece illustrating how it is constructed out of mats laid one atop another.

To the left is a photo of the completed second layer in front of a window.

To the right is a shot of the top five layers, stacked loosely atop each other.