To change the date or place of marriage or dissolution, the officiant (marriage) or clerk of court (dissolution) must complete and submit the affidavit. Wait ten days after mailing or delivering the last of the letters. 7.Fill out the blank Small Estates Affidavit in this packet in front of a notary. General affidavit form for use within the State of Washington. Modify this affidavit to meet your specific needs. Washington Affidavit of Service Template. Utilize our affidavit of service template to attest legal documents served to a party involved in a legal proceeding. I declare under penalty of perjury according to the laws of the State of Washington that the following is true and correct. Download free printable affidavit online for Washington State. This portion of the simple will-drafting instructions explains how to format the signature lines and affidavit of your simple will.