A wood window valance can be built in almost any shape that you desire. Rectangles are undeniably the easiest shape to build, but arched valances are also extremely popular and easy to build. Scalloped edges are also attractive and versatile, and gingerbread type wooden valances are common, especially in houses that have gingerbread trim. Rather than using a plain rectangle or adding a scalloped edge in a valance for a child’s room, you could also consider using a pattern of heart shapes or even triangles. Almost any shape that you like is a possibility in a wooden valance.