Although the tutorial calls for using a quilting ruler to fold, I decided to use something larger because I don't quilt, thus had lots of pieces that were several yards long. Once they were folded over the ruler they were too thick to fold in half. I settled on using two of those portfolios that hold a pad of paper.
I also used the folding as an opportunity to catalog my fabric stash for some bizarre reason. Maybe I'm nesting. Anyway, it was easy to add a step of measuring the fabric, since I already had to smooth it out and fold selvedge to selvedge, and since I cleared the living room to do it, I was right by the computer anyway.
Here are my before pics, a wreck of a craft room after about a week of just opening the door and throwing things in:
I took a "before" shot of the shelves and closet where I store my fabric, but now I can't remember where I saved it.
I've been folding here and there whenever I find the time - usually about a dozen pieces or so each time. I'm up to 160+ yards, and the end is nowhere in sight!