Is it possible for a moderately experienced do-it-yourselfer (like me) to refinish a resin countertop in a bathroom? Or better yet, is it even possible to refinish resin? The counter in one of our bathrooms is looking a little old (a couple of stains, dull and lifeless finish), and I’d like to spruce it up instead of replace it. Thanks to any skilled craftsman who can help me out.