Do I need to seal the piece with anything?Updated a year ago

Sealing is always a great option to bring out the final colours, and add a slightly water resistant finish to it. You can buff a small amount of coconut oil or beeswax into the surface of your piece using a soft lint free cloth. Start with a little amount and gradually work up. 

You want the piece to absorb the oil and for there to be nothing left on the surface. You can also use furniture polish or paint a clear varnish over the top to give it a high gloss finish.