General affidavit form for use within the State of Utah. Modify this affidavit to meet your specific needs.Form of notarial certificate for document notarizations. Must be at least 18 years old. 2. On this ______day of ______, in the year 20____, before me,. First, find a notary public who can witness your signature. Second, include all the required information for the type of affidavit you are making. Allocate space at the end of the affidavit for the affiant to sign and date the document. A small estate affidavit is not filed with the court. The affiant's signature must be notarized for legal validity.