On the blank lines, list the facts the judge needs to know about what happened and when. Put the date you sign the affidavit at the bottom of the form.In order to be exempt from the sales and use tax, you must meet the requirements of the law and complete the affidavit above. Add a case caption identifying the court venue and people involved. Edit, sign, and share i 751 sample affidavit of friends letter pdf online. You write a DECLARATION, under PENALTY OF PERJURY and state in the beginning: I JANE SMITH, DECLARE: 1.