Everything you need to write a declaration letter to the judge in your custody case: an example, a downloadable template, an outline and tips. Some court filing costs may be in the hundreds of dollars.Sample Forms These sample forms may be useful when filing documents for the civil and family courts. If you have any questions, consult an attorney. What parents and witnesses need to know about character reference letters to the court for child custody. Includes a downloadable sample and template. If there is a Children's Lawyer or Child Advocates office, ask them to investigate. Ask them to present an opinion on which parent is best. Box 1: Print the county in which you are filing your petition. See "Where do I. File?" in the Introduction for more information about what county you.