That should work. I suggest attaching the fabric to a pelmet with Velcro so it is easy to remove for washing. Also consider: 1. Screening only the bottom half if you have sash windows. 2. Using the sheer fabric to make a stiffened roller blind. 3. Using an iron pole (which could be hung from the ceiling or wall) and hanging the sheer fabric from the pole with ties. 4. Making a soft blind which rolls up.