Sissy
To braid the scabbard cut a pvc pipe about 10 ins. long. This will give you something to hold on to and room to braid. You can hold in a vise in order to use both hands. Make the scabbard a bit longer than how you want it to cover the knife, to allow for the shrinkage and around the end of the knife, when you go back and tighten the braid. To give the scabbard its form, cut and shape a 1X4 board to the size of the knife being cover. Giving the braid a good temper, slip the braid over the knife form and rub toward the top. Then let it dry over night.
Ex.
Case Trapper - 1X2 in. pvc pipe
Case Soddbuster - 1X2 in. pvc pipe
Case Old Timer - 3X4 in. pvc pipe
I use 1X8 rawhide single. Multistring (I used 6 string when I started) may be better for you to start of with.