Most lightweight fabrics drape beautifully, thus they are a great choice for dressy clothing. lingerie and sometimes home decorating projects. Lightweight fabrics tuck and gather very nicely but work best when they are sewn into simple designs without a lot of seams or details since you can see through the fabric. Because your fabric is so sheer, all of the inside construction can be seen on the outside. This type of fabric is not the place to use a 4 thread serger stitch. A French Seam or stitching two rows of stitching close to each other and then trimming close to the stitching are your best methods for constructing seams. Bobbin thread is an option to explore for barely visible seams and is your best choice to hand baste the fabric so that it stays in place as you are machine sewing. If you still have doubts about thread quality please be sure to visit. Do not make deep, wide facings when you are using Chiffon or very sheer fabric. To finish edges, use a bias tape facing or binding. It may be possible to make your own bias tape from your fabric.