Use this form to swear under oath in writing to facts that you personally know. "Learn how to craft an effective character reference letter for court proceedings with our comprehensive guide.Verify statements for legal matters and business transactions using our Illinois general affidavit form template. How do I fill this out? To begin filling out the form, first gather all required information, including your name and the case number. What parents and witnesses need to know about character reference letters to the court for child custody. Includes a downloadable sample and template.