Get the broken piece or a piece of wood of similar grain and glue it in place. Fill the spaces with wood filler. Sand smooth. Now for the artwork. Get some acrylic paints from art or craft store and mix colors to match the color. Use some darker colors for graining effect. When the match is reasonably close, wipe on some polyurethane with a cloth to match the finish. And there you go. Good as new ...almost.