Always address a judge as "Your Honor". It doesn't matter if you are speaking or writing, or in or out of court.The better route is to contact one or both attorneys and let them know what you'd like to testify about. Writing a letter to the judge is considered an inappropriate ex parte communication. Everything you need to write a declaration letter to the judge in your custody case: an example, a downloadable template, an outline and tips. Michigan Legal Help has tools to fill many kinds of forms but we do not cover all areas. You may have a blank form that you need to fill out on your own. Learn how to write a letter to a judge. Whether you are writing as a victim or on behalf of a defendant, follow these expert tips. Here are suggested guidelines, if you want to write a letter of support for a friend, family member, or loved one for their sentencing hearing.