Summarize the following:
To make a scarf that is nice and light for wearing during warmer weather, select a fabric that is lightweight and gauzy. For example, you could use a rayon challis, cotton voile, silk gauze, or cotton batiste fabric to make your scarf. Make sure that the fabric looks the same on both sides. Otherwise, you will have a scarf with one side printed and the other not printed, which may look a bit odd. Most gauzy, semi-transparent fabrics will look the same on both sides You can use 1.5 yards (1.4 m) for a moderate length scarf, or use 2 yards (1.8 m) for a long scarf. The width of the fabric will depend on how full you want it to be. Try wrapping the fabric around your neck a couple of times to see how it looks with the current width. If it seems too full, then you could cut off some of the excess to lighten it up. A serger is ideal for finishing the edges on a gauzy fabric. If you have a serger, set your machine to the rolled hem setting and serge along the edges of the scarf using a matching color thread. If you do not have a serger, then you could fold over the edges of your scarf fabric by about 0.5 inches (1.3 cm) and then sew a zigzag stitch along the edges to secure them. Make sure to sew over the raw (cut) edges of the fabric to hide this area and prevent fraying.

Summary:
Choose a lightweight, gauzy fabric. Cut the fabric to the desired length and width. Finish the edges with a serger if you have one. Fold and sew the edges of your scarf if you don’t have a serger.