This video crochet tutorial will help you learn how to crochet the whip stitch seam. This method of joining two pieces of crochet fabric uses a simple whip stitch. It's best for fabric with straight edges and creates an almost invisible seam.
This video knitting tutorial will help you learn how to knit the mattress stitch. This technique is used to graft or seam two pieces of knitted fabric together. It generally leaves an invisible seam when joining stockinette.