Chalkboard desktop for inspiration. You could use 3 coats of Graphite Chalk Paint by Annie Sloan for the chalkboard, and Emperor's Silk for the desk. I like it all except the chalkboard top. Would like to paint my desk it is similar.
(I have this same piece & trying to decide what color to paint it. NOT yellow, at least not for my living room as it is now) Painted furniture makeovers. Use Annie Sloan Chalk Paint™ to make your projects truly fabulous!