If you are new to decorative painting, sponging is a great place to start. Sponge on glaze or sponge off glaze to create the custom look perfect for you. To cover a larger area in less time use a sponge roller in place of the natural sea sponge.
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