An affidavit of forgery is an official declaration that a fraudulent act was committed. It should be completed, notarized, and sent to notify institutions.Notwithstanding the provisions of this section, a notary shall not be required to complete, cross out, or mark through blank lines or spaces in the notary. A notary may notarize an affidavit regarding and attached to a photograph. Everything you need to know about notarizing affidavits. Learn what an affidavit is and how to notarize it. You must complete two original copies of the affidavit before a Notary Public. Breaking the law when notarizing can lead to serious penalties. Here's a look at the consequences of Notary misconduct in different states.