"Learn how to craft an effective character reference letter for court proceedings with our comprehensive guide. In this article, we will discuss how to write a formal letter to a judge, along with the proper format and a sample letter.What parents and witnesses need to know about character reference letters to the court for child custody. Includes a downloadable sample and template. At the start of the letter, introduce yourself and explain how you know the defendant. Writing a character letter for a judge can be a daunting task. Here are nine essential tips for writing an effective sentencing letter. Below, find a fill-in-the-blank template, as well a detailed example of a declaration letter. Keep in mind that court requirements and preferences vary. I have whited out the names of the parties, the attorneys, my name and Attorney ID Number and the signature of the Judge.