The tricky part is that you need to make sure that you are screwing into studs. If studs are not available you will need to use sheet rock anchors instead. The screws are 2 1/2 inches long, so the L brackets were nice and secure before the valance went up.
The 2 L brackets go directly on the inside of the two outside edges of the valance. The top holes in the hardware are left unused.
This picture is taken from directly below the valance.
Your measurements will have to be precise. Your hardware will need to be on the wall before you hang the valance, so measure very carefully. You’ll need at least two people to help hold the valance in place (ours was super heavy!) while you screw the hardware onto the valance.
The end result is worth it.
Good luck! Don’t forget to send pictures of your finished projects to allthingsthrifty at gmail dot com.
Check out more about picture rail system.