These are the official forms for use in Family Court proceedings. Affidavit Form Template.Create affidavits quickly with our user-friendly online template. This form must be completed and submitted along with an original bank statement or official letter of award from the sponsor as part of the admission process. Learn how to create an accurate affidavit letter with our free printable templates. This form is called an Affidavit of Service. A licensed process server will have his or her own forms. This article provides a comprehensive sample of an affidavit letter, guiding readers through the essential components and format.