Lay out your pieces of corkboard on a flat surface. Because you will be using a blade, you may want to use a surface you don't mind getting a bit scratched.
Draw out the shape you want to cut. If you need an idea for the shape you want to create, or you are not comfortable drawing freehand, see resources below for a free online stencil database. These stencils can be printed out, and easily traced onto your corkboard.
Use a razor blade to cut out your shapes. Corkboard is generally thin, so it requires only low, even pressure to make your cuts. Depending on the thickness of your sheet of corkboard, you can even use scissors to make larger cuts.
Skim off any rough edges or excess with your razor blade or an emery board. These pieces that you cut out can be painted, or covered in fabrics to be used in arts and crafts projects.
Prop your corkboard on an easel, or lay flat on your table. Paint your artwork as you would on an ordinary canvas. Because corkboard is very porous, you may need to use several coats to achieve your desired colors. Thicker paints like acrylic or tempera are ideal for corkboards.
Cover with fabric for instant wall art. Cut your desired piece of fabric to the size of your cork material, and staple in place using a staple gun. Staples are easily removed, so you can change the fabric cover to your corkboard as frequently or infrequently as you choose.
Pin items to your corkboard to make a collage. After all, corkboard is used often as a place to pin up notes and important information. You can use this practical purpose in a fine art context by pinning items, fabrics, papers or anything to create a one-of-a-kind, three-dimensional collage piece of art.