There is a slightly different method in Anita Grossman Solomon's book "Rotary Cutting Revolution"
I have wanted to try it but haven't gotten to it yet. It has been a while since I looked at it, but I believe that you mark your cutting board as a guide. Make all the cuts from a square of fabric (layered at least 4) before moving the fabric. Then place the pieces on your design wall just like this one. Eliminates both the template and the waste.