You normally sew this stitch on the wrong side ... The gap between the edge of your fabric and your seam line is called your seam allowance. Emma: It's quite tricky to keep the line straight.

when to use them and how to sew them. A seam is the join between two pieces of fabric. Typically, it’s a line of stitching by hand or on a sewing machine but you can also make seams with fabric ...