Form of notarial certificate for document notarizations. Must be at least 18 years old. 2.I am first duly sworn and state I am: Name. This article and video will show Notaries to fill out each part of a notarial certificate, and common mistakes to avoid. Everything you need to know about notarizing affidavits. Learn what an affidavit is and how to notarize it. An affidavit of forgery is an official declaration that a fraudulent act was committed. It should be completed, notarized, and sent to notify institutions. Do I fill the Affidavit of Identity out before going to a notary? No. A notary expects to witness your signature.