Cornice boards can change the overall look of the room, but are simple to make in your home with basic tools and skills.
Building a Cornice Board
To build a cornice board, you need basic plywood, some nails, a saw, and a hammer. Measure out the board to create the length of the board and then measure two sides which will attach to the wall where the window is located. Attach the smaller pieces to the large piece, creating a thin table like structure. Nail the pieces into each other after adding some wood glue to the edges which mean for extra stability. Sand down any rough edges as well as the surface of the board and youre ready to decorate.