There are many good methods to join pieces of crochet or knit. My current favorite method is the Flat Braid Slip Stitch Join. This method is simple to do, looks nice, and creates a completely flat seam.
- Blocks/pieces of crochet or knit you want to join/seam together
- Yarn to create the seam. In this tutorial I've used a contrasting color to my blocks as a design element and also to show the difference between the seam stitches and the block stitches. You could also use a matching color yarn.
- Crochet hook in a size appropriate for your yarn. In this case I'm using a size H/5mm hook since I'm using a worsted weight/category 4 yarn.
- Needle to sew in your yarn ends
Yarn over and pull through all loops on the hook to complete the stitch.