I found several tutorials on Pinterest but there is really nothing to it.
I start with the same length of canvas strap and ribbon. These are 8 in. You'll also need the end clamp and a split ring. I purchased the special pliers because I figured I would use them. You can also use a pair of regular pliers and a piece of cloth to not scratch the metal.
I sew the two pieces together.
Fold them in half and clamp. Easy peasy lemon squeezy.