Outside of the turks head knot variants, there are few techniques that are appropriate for making paracord knife wraps. I found an image of a knife wrap that David Hopper made. It was a recreation of an old sword wrapping technique
# 770 Merlin the Wizard Sword by Marto of Toledo Spain -- This is a beautiful blade that I got on clearance at a K's Merchandise. I have used it to give a frame of reference to the Sword that Belengol crafts at the forge in Act IV.