What parents and witnesses need to know about character reference letters to the court for child custody. Includes a downloadable sample and template.Writing a character letter for a judge can be a daunting task. Here are nine essential tips for writing an effective sentencing letter. Sample Format for a Character Letter. If you have been asked to write a character letter, this simple template may be a useful guide. The character reference letter for court serves the purpose of offering the Judge insights into the Defendant's moral or mental attributes. A character letter plays a dual role. File a Request for Order (form FL-300) or a Responsive Declaration to Request for Order (form FL-320), you can also submit documents or other evidence. You may use this form or the Petition for Appointment of Guardian of.