Knotted Headband Braid

Hi everybody,

Today I tried again to do the "take-2-strands-and-knot-them" braid, and I actually managed to make this braid as a headband.  Why is it that knotting 2 strands can be so much harder than braiding four or five strands?  I added the smaller French braid for interest.  Thank you for following my hair posts!

(but more in keeping with the actual temperature here...)