Yes, I am following the instructions @spicynujac. And thank you for your response. Can the "Certified true copy (CTC)" be done by the notary?
As far as the green card, It says this on the site: "Samples of proof of Filipino citizenship are: US Naturalization Certificate, US Permanent Resident Card, Valid Visa or Work Permit; or Dual Citizenship papers (Identification Certificate and Approval Order)"