Complete a Notary application, which includes your oath. Fill out your Washington Notary application.Send a copy of your bond, application and filing fee to the state. 1- Be 18 years of age or older. 2- Be a citizen or a legal permanent resident of the United States. Complete a Notary Public Commission Application, which includes the oath of office. To get a notary public license, you must be: 2. Gather the necessary documents 3.