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
Many deer antlers are too curved to be used as-is for knife handles, but you can straighten them so that they can accept the tang of a blade. Once you’ve straightened an antler, you can prepare and attach it to a knife blade without needing adhesives.