Learn how to build your own wood window cornice box to dress up your window frame. Building a custom wood window valance is a great beginner building project!
See more of self-taught DIYer Jenny’s home and tips for beginning DIYers here — you won’t want to miss her beautiful kitchen and living room! Plus read how to install easy craftsman window trim around any window.

In my son’s room, the window is on the wall opposite the door. The window is the focal point of the room, the first thing you see. I dressed it up with a DIY window cornice. The cornice adds weight and visual interest. It’s also a decorative accent that adds a bold pop of color to the room. (I liked how it turned out so well, that I made similar cornices for my other sons’ rooms.)
What is a Window Cornice?
A window cornice is