Use this form if you are asking the court to make any orders in a case involving a child (a person under the age of 18). You must fill in and file this form.How do I fill out the Affidavit disclosing care or custody proceeding? Do you need to file a Child Custody Affidavit? Learn how to process it and how to file for temporary custody from this article. C. Use only the letter appearing in front of the child's name above when referring to the child in completing the remaining sections. This is an article that outlines how to fill out the forms but let's just do it together. I am competent to testify as to the matters set forth herein and if called as a witness would testify as set forth below. What parents and witnesses need to know about character reference letters to the court for child custody. Includes a downloadable sample and template.