The first paragraph should tell the judge who you are writing to him about and how you know the defendant. You'd also want to say how long you have known her.Sample Format for a Character Letter. If you have been asked to write a character letter, this simple template may be a useful guide. I am writing this letter on behalf of a former student of mine who is presently before you on criminal charges and is due to be sentenced shortly. The character reference letter for court serves the purpose of offering the Judge insights into the Defendant's moral or mental attributes. The best character letters often begin with the writer explaining who he or she is and what he or she does. There's not time to read all that comes before a judge to read. 2. A character letter to a judge should establish your credibility, paint a full picture of the defendant and be respectful, among other things. This article can help you craft a wellwritten expungement letter if you follow through with the samples given.