(*update* 5-22-13 I have started using thick felt for the backing, it seems to be more rigid over time, easier to sew and it give the rug a little cushion.) Ties are very long so you will only be using about half of the tie. Be sure to hold on to the other half for another project. Start in the center of the piece of buckram, pin your first tie down and then pin another tie next to that one with the large end pointed the other direction as you see below, we will alternate wide, narrow, wide, narrow. It is important that you use a very heavy duty needle for this, I used a 18/110 and a heavy duty upholstery thread. I used a matching red thread. Using a fairly close zig-zag stitch, sew the first two ties together on top of the buckram backing. Working out from the center out, keep adding ties with a zig-zag stitch, trimming the excess tie off.
This is what it should look like when you have sewn down all your ties.
Trim off any left over tie pieces or points.
Machine bind as you would a quilt. Katie at Swimbikequilt has a good tutorial if you don't know how to do this. You could try to bind by hand but I think it would be difficult due to the thickness of the fabric. I used a red twill fabric for my binding so that it would hold up to wear and tear.
There you are, just that easy!