How to Sew French Seams
French seams area way to encase the raw edge of the fabric so it’s not seen. it’s a way to finish garments, although I find it works best for straight lines. While you can french seam curves, it is a little trick to avoid puckering. If you’re new to the idea of this way of finishing seams, stick with it for straights until you get it down and can make them narrow.