Okay...soooooo...once I got the correct type yarn on the backstrap the weaving is reasonably easy. At least in plain weave.
I chose some #3 in colors of my friend Dana's Alma mater. Garnet, gold and black. When she took at look at it she asked me if it would be long enough for her to use as a 'backstrap'. I was thrilled, as I am going for my steak cookout, payment for the guitar strap, tomorrow.
So today when I got up, I quickly completed the weaving and made it into a strap for her. I even have extra dowels. I am so excited about tomorrow I can hardly stand myself.