The Flat Slip Stitch Seam is a great way to attach granny squares together!
While I like using the whip stitch to join my granny squares together, I wanted to show you an alternative that gives a beautiful look: the flat slip stitch seam. 🧶 The key is to have your working yarn behind the granny squares! After inserting your hook into the back loop of one square and then the back loop of the other square (from front to back), you pick up the working yarn from behind, yarn over and then pull through all the loops. This results in a flat seam with no visible ridges. Be sure to work loosely otherwise the seams will bunch together! Have you tried this seaming technique?