Check out this clever and dramatic shabby cottage look of a headboard accent made of decorative plates (picture found on Decorative Dishes on Pinterest ).
Here you have a collection of pink decorative plates in the shabby chic style with a large oval platter surrounded by varying sizes of small, medium, and large decorative plates.
These can be hung with adhesive decorative plate hangers (see how to use adhesive plate hangers video below) and arranged to follow the natural curve of the headboard. Clever!!