At the very first, you have to attach the lower base of your stitching pony to your workbench or on your favorite chair. And then loosen the adjustment screw to open up the jaw of the stitching pony. When the jaws have opened up, put your leather slide between the jaws and tighten up so that the jaws can hold the leather firmly. Using the adjustment wrench, you can tighten up the jaws. And you are ready to go.