The character reference letter for court serves the purpose of offering the Judge insights into the Defendant's moral or mental attributes. What parents and witnesses need to know about character reference letters to the court for child custody.Includes a downloadable sample and template. Everything you need to write a declaration letter to the judge in your custody case: an example, a downloadable template, an outline and tips. In this article, we will discuss how to write a formal letter to a judge, along with the proper format and a sample 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. Point out any positive traits and acts from their past before the trouble arose. Find out for sure which judge will be handling the sentencing that will vary in larger counties. Based on my knowledge of ______, I firmly believe that the actions alleged in the charges against are uncharacteristic of true nature.