This packet of forms is provided as a courtesy only. You can file a petition for child custody in your county's Superior Court.If you are divorcing, the petition will be included in your divorce papers. The forms you may need to file include the Petition for Custody and Support of Minor Children (Form FL260) and the Request for Order (Form FL300). You will need to use these forms when you file your case. This guide will take you through both of these processes, guiding you on which forms you need, how to fill them out, and how to start the filing process. Read the latest Information and FAQs from the Los Angeles Superior Court regarding e-filing on Family Cases. LawHelp Interactive is a website that helps you fill out legal documents for free. The steps to get child custody include filing a petition, developing a parenting plan, and going to court. Online: You can file online through the court's e-filing system, eFileNV.