This is where I go to find the instructions.

Joe, check your personal messages.

I have always used the method by Georgia Bonesteel from the early 1980s where you use a rectangle and you don't have to draw any lines. This method is similar to Georgia's but instead of using your finger to measure 2" you use the 2" strip you cut at the beginning and fold it back onto to bias tube and use that for your cutting edge. I usually buy 1 1/4 yd of fabric to make binding for a king size quilt but you can use the method in this video to figure out your yardage.
https://www.youtube.com/watch?v=aBzrGYR41Kk :o