1. Using a self-healing mat, drywall T-square, and a utility knife, cut four strips of carpet 1½ inches wide. Repeat for your second carpet. (As you may have already noticed. You have enough carpet to make two checkerboards. Go for it.)
Tip: I highly recommend the folding utility knife in the picture. I bought it because I knew I would be cutting lots of carpet, which means changing the blade often. This one has a quick release for changing blades. So much faster! Plus it feels good in the hand. I tossed all my old utility knives.