Great suggestions! I will "carefully' give the 1/4th folds a try. My kitchen counter that I cut on isn't quite 72". I think I can try taping it in place, too, so it won't slip. The fabric I'm using is "dull satin" so it can be very slippery. I have been just measuring it with a marking pencil but my hand cutting is shaky lately plus cutting with scissors makes the fabric even more slippery.
I'm going to try this after I take my afternoon nap...that way my hands will be streadier...or so I'm convincing myself. LOL