This packet of forms is provided as a courtesy only. Go to the same courthouse you listed on your forms.Fill out court forms online using the LA Superior Court's user-friendly forms completion programs. There is a court fee for filing a Guardianship Petition. In addition, you may be charged a fee for a guardianship investigation. This guide is designed to help you fill out the forms yourself. It is not intended to provide legal advice nor strategy as to how to complete the case. Petition For Enforcement Of Order Of Custody Visitation. What forms do I need to file for child custody in California? This guide is designed to help you fill out the forms yourself.