How to Tie a Western Cinch

After you have tied the knot take up any slack in the cinch strap. Gradually pull the cinch straps, starting with the first (innermost) loop, so that the cinch is tight and the saddle is secure. Depending on the length of the remaining strap, you may loop it through the keeper behind the saddle strap.

Tighten your cinch again after your horse has moved around and relaxed. You want it tight enough so the saddle doesn't turn easily, but not so tight as to pinch the horse. You should be able to insert your fingers flat between cinch and horse.