When I make a bull whip I write on the bolster. I don’t write and inspirational quotes or anything like that, I just write the distance every foot. This helps me keep track of where I am during the plaiting process and this will help keep me aware of the taper and what it should be at that point.
So here’s the bull whip at three feet:
And here’s the bull whip at four feet:
When I was first starting out I used to draw a line down the middle of the bolster in addition to putting marks every foot. The line used to help me keep my seam from wandering to much around the whip.