Here is the tutorial based on a Kwik Sew pattern 3115. First start by measuring your pant waistband and subtract around 2-4" depending on your comfort level for the elastic. Sew the elastic into a circle Quarter and mark the elastic and your waistband Then zigzag the elasic onto the facing side of the waistband. Press and steam, this helps to shrink the elastic a bit more. Here is the elastic stitched down, used a zigzag stitch. Here is a picture of the facing on the inside Now a picture…
