I received an update from Nigel who made another saddle stitch with more details.
Thank you very much. That’s very kind of you. If it helps, the Saddle Stitch in More Detail covered both left and right hand stitching, also corners, back stitch and a few other bits. This video is just left handed. Have a look and see if it helps.
He also does a great job explaining the basics of using a pricking iron including how to deal with corners.
We’re proud to say that we sell the proper sized #2 harness needles he mentions, not the oversized ones other places sell.