I started with a New Quilt, Vertical Stripes. I made the stripes 12" x 80", added the 1" and 2" stripes (borders) between them, added the 1" inner border and the 6" outer border.
I created a new block, size 12"x80", and just used the drawing tool to do 45 degree lines to make the braid. It isn't exactly the measurements of the pattern but it was easiest to just do whole inches for design.