Use this form to show they have adequate means of financial support and are not likely to rely on the US government for financial support. After the Affidavit of Service is done, it must be filed with the Court.Completing and signing Form I-864 makes you the sponsor. To start the declaration, the person should state their complete name and address, as well as their country of citizenship. A completed, notarized Renewal Application. To start the declaration, the person should state their complete name and address, as well as their country of citizenship. An affidavit is basically a sworn letter. All questions on the affidavit must be answered completely and ALL requested documentation must accompany the affidavit.