What happens when you don’t tie a square knot correctly? You wind up with a granny knot! This is what happens when you repeat, instead of alternate, the side that you put over.
After having done a couple made out of rope, I decided to experiment with what the “knot” was made out of. I went with a patriotic red, white, and blue stripes. I repeated the colors with a noise texture fed into a color ramp in the background, but muted them with a white mix to make the knot stand out more.