I am not sure how you would do it. I do know that I cut starting on the far right of my fabric and cut on the right side of the ruler and I cut backwards like.... Im cutting 2 inch strips, I start at the 26 inch mark and go backwards to 24, 22, 20. I would think, but I am not sure as I am right handed, that you would cut your fabric from the left and cut on the left side of your ruler and cut 2 inch, 4 inch, 6 inch. Do you understand what I am saying?