Hi there, Most of the vidoes and explanations I'm finding about mattress stitch shows how to create a seam between two pieces of fabric where both pieces have vertical stitches or when one side has vertical stitches and the other horizontal. Maybe I'm just just not looking hard enough, but I'm looking to sew up two pieces where the stitches are horizontal on both sides. I'm trying to sew up the sides and sleeves on this project. Perhaps I should just try kitchener, which I'm really comfortable doing? The problem I guess is that I don't have live stitches to work with. Thanks guys!