I wanted an easy valance idea for my bay window in my kitchen. I cut a piece of wood slightly longer than the width of my window and then cut two pieces a couple of inches long to connect to my the long piece. I connect them using an L bracket. I then wrapped the valance frame in batting. I glued it down, because I didn't have a staple gun at the time. If you have a staple gun, I would use that. I then took my fabric and did the same thing. Pulled it tight around the valance frame and glued (or staple). I then connected the valance to the wall with an L bracket. It is a two person process hanging them on the wall, but it goes fairly quickly. That's it! An easy no-sew box valance!