The video shows how to finish garments with serger or French seam. If you have a serger sewing machine then you can straight away place the seam along the seam and stitch on the machine. The advantage of this machine is that it gives 3 fledge serger stitch at one go. If do not have a serger machine then you can use the French seam. First the rough seam is stitched on the wrong side of the fabric and frayed edges are trimmed. Now the fabric is turned over and ironed over the stitch and a straight stitch is given. You can leave the seam sticking out or you can stitch it from the right side to press it down.