Hi Amy! Yes, you will need to slip the last three stitches of each row purlwise (with yarn in front) and knit them on the next row, this way you will create the i-cord edging. The working yarn will remain on stitch 19 (a total of 22sts – 3 sts =19sts). You will have 19 sts worked in pattern, working yarn, 3 sts unworked. Turn the headband to work the next row as usual- the working yarn is at the back of your work (yes, in between the stitches, not connected to the last stitch). Now simply knit those first three stitches with the working yarn. The yarn will pull on those stitches making them curl inwards to create a neat tube. If you have ever worked a selvedge, where you slip the last stitch of a row, than here you will do exactly the same, but instead of one stitch it is three stitches. It might look a bit strange at first, but work for a few rows, and you will see a neat edging forming.