Okay, so most of my sewing has been with a machine, and right or wrong, I pick the stitch length I think appropriate and started sewing. When getting close to finishing the sewing, or at a corner, I would release tension and manually adjust the leather so the last needle hole hits the corner/end point as desired. How do you match you sewing to a new pattern, so you aren't 1/2 a stitch off when marking your stitch lines? use a single iron to bridge any gap essentially making a one stitch a different length adjust pattern to match desired sewing stitch length measure pattern and use that to determine stitches per inch (cm) I don't have the answer - most patterns I've seen or used have it matched perfectly already. I see many folks are using software - not there at this point; I'm eyeballing what looks good. My current use case is making a lined belt, and wanting to ensure the stitches end at the belts point. Haven't finished all the videos yet if it is in there.