I know this sounds easy...but believe me it is not...I have spent two weeks trying to figure out the correct stacking order. It is not as simple as you would think.
After making the first cut..and placing the smaller piece of fabric to the very bottom..,and the second cut and moving that to the very bottom, the third cut, and moving that to the very bottom, after the forth cut, moving that to the very bottom, then the same fabric shows up in the same sqare..on for instance block #5..has the #11 fabric in the same square...
There has to be a way to stack without repeating fabrics...