I have watched the videos.  In the videos, the braid goes all the way around the perimeter of the piece.  What I would like to do is one edge of a holster, e.g. where the finishing end does not lace back into the starting end.  I can start fine (inside of 3, over to 1, over to 4, etc...).  I have practiced that a few times. 
How do I finish the other end? 
Also, a good source of flat braid would be of great help.  Thanks!