Hand rolled edges are most suited for chiffon and other sheer fabrics. Binding the edges with a bias tape also look great for tulle, netting. A narrow hem or a rolled edge is the most suitable finish for the hems of clothes made with these thin fabrics. I prefer a narrow hem as I sometimes have trouble with the rolled edge especially with chiffon. To do a narrow hem, I simple fold 1/4 inch inside and and stitch close to the edge ( as close as possible.) Then trim the seam allowance as close to the stitching line as possible , using a small sharp scissors. Then fold again and stitch the narrow hem. If it your first time sewing with this fabric, practice on a scrap.You can do this with a serged edge as well. You generally do not hem net. As it doesnot fray it is usually just cut off at whichever length you want it and left it like that.    A picot edge and shell edge are other edge finishes which are suitable for sheer fabrics.Checkout the tutorials - Picot edge tutorial ; Shell edge finish tutorial, 16 hand sewn hem stitches To prevent problems in the edges when sewing with sheer many designers use the self lining method. This way facings on neck holes are eliminated. Double bodice pieces are cut and one piece is used as the facing, which serves as the lining too. In some cases binding with a single bias tape is also used. Checkout  how to make bias tape. It is when first starting sewing ( those first few stitches) that you usually have problems with the sheer thin fabrics. So a method you can use is to start stitching on a piece of paper or another scrap fabric and then continue on to the fabric. This way you have some tooth ( which you totally miss in these delicate fabrics). Ensure that you are not using too heavy buttons on the sheer fabric, as there is a danger of sagging.A handmade buttonhole with a small interfacing on the back is the best. Sleeves also can be self lined and cut double.The seam at the hem can be eliminated in this way. But some like the sheer look of the sleeves. In which case carefully hand hemming is recommended. When I am sewing dresses or skirts in delicate sheer fabrics I always wait for one or two days ( with them hanging in the cupboard) before hemming. They always stretch and sag so I let them get all of that out before finishing the hem