Diane, the top of the valance is mounted on a 1x2" board and for the bottom you will need one of our Awning Valance Rods with Adjustable Clearance. Here is the link: http://www.patemeadows.com/Awning-Valance-Rod-with-Adjustable-Clearance_p_398.html.
All of the detailed construction and installation and instructions are included in our patterns.