If you've been asked to write to the judge, use our sample character reference letter and fill-in-the-blank template. What's a character reference letter?Writing a character letter for a judge can be a daunting task. Here are nine essential tips for writing an effective sentencing letter. 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 is a letter of support from people who know you to help show judges and DAs the positive sides of you. A character reference letter for court is a written statement advocating for an individual's moral standing, which can influence the judge's decision. Sample Format for a Character Letter. If you have been asked to write a character letter, this simple template may be a useful guide. Introduce yourself in the opening paragraph.