Why use a French Seam
How to Sew a French Seam
1. Prepare your fabric, marking/noting the wrong side of your fabric. Cut all loose thread making sure everything is neat and ready for you to sew.
2. Pin wrong sides of fabric together making sure everything is lined up neatly. This is probably the only time (unless intentionally) you will start a seam with wrong sides together. Use as many pins as you need, you can never use enough pins to secure your fabric.
3. Sew a straight stitch (0.5 cm or 5/8" of an inch). Back tacking at the start and at the end to secure the stitch in place. Also don't forget to remove the pins as you do. HOT TIP - Also remember once you have finished sewing you can always cut back the seam if you prefer sewing a wider seam allowance.
4. Iron your seam flat so that pinning the next step is much easier. I also recommend ironing every step as you go, especially with delicate fabrics.
5. Once you have ironed pin your fabric now facing right sides together. As you pin along use your thumb and you pointer finger to roll the seam back making sure the seam is nice and tight. Use as many pins as you need so that when you so you don't create any ripples. This is caused by your fabric slipping/moving as you sew. It needs to be kept straight.
6. FINAL STEP - iron your garment/seam for an impeccable finish.
To make it easier for you to follow we have also created a tutorial for you to watch.
This tutorial is a step-by-step visual on how to sew a french seam.