A complete affidavit is composed of three essential elements. These are the attestation of the affiant, the oath made, and the affiant's signature. The attestation of the affiant should have a strong knowledge of when, where, and what has taken place. The oath made should be by the affiant who sworn that the statements were true. The affiant's signature is needed in the affidavit of execution form. This serves as an affirmation that he or she is present and the statements were all true.