With sketchbook you can design, visualize, calculate for your decorating projects. Tips For Cornice Construction By Michael Hill Michael owned creative cornice and made hundreds of cornices for all types of decor. They really help with accuracy. Work with a partner, two heads are better then one and four hands are better then two.
Most cornices look best when kept in proportion to the window.
Make a scale drawing of the window and wall and then draw your cornice over the window. Generally 2 inches past the window is the right about for a cornice. Dormer window are very confined, the space above may not be appropriate for cornices. It is a good idea to hold up a bracket to the window to see where it will work. The brackets must be installed by a screw to the wall, if the surface is not flat then the cornice will not have a proper fit.