"Learn how to craft an effective character reference letter for court proceedings with our comprehensive guide. Sample Format for a Character Letter.If you have been asked to write a character letter, this simple template may be a useful guide. A character letter to a judge should establish your credibility, paint a full picture of the defendant and be respectful, among other things. Character Reference Letters and Letters of Recommendation are useful in defending an Orange County DUI case, as prosecutors and judges use them in court. Free template for a character reference letter for a DUI charge! The letter should focus on the good that she does in her life, the fact that this is an aberration in her life, and that she has a good support system in you. 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.