General affidavit form for use within the State of Maryland. Modify this affidavit to meet your specific needs.Once you have filled out the affidavit, have it notarized. Do I fill the Affidavit of Identity out before going to a notary? This article and video will show Notaries to fill out each part of a notarial certificate, and common mistakes to avoid. Generally. "I solemnly affirm under the penalties of perjury that the contents of this document are true to the best of my knowledge, information, and belief.". INSTRUCTIONS: Fill in all sections below. Please print clearly. When notarized a letter to be sent to child support, do I stamped the letter and complete an acknowledgement form? National Notary Association.