You can submit your application for derived citizenship online or by paper. In both cases, you must complete the Form N-600 (Application for Certificate of Citizenship).
Before your application can be processed, you must pay your filing fee. Naturalization through parents usually costs $1,170, but the fees may vary if you need your biometrics to be collected.
Do not forget to upload or post your evidence. By doing this, you will prove your relationship with your children and demonstrate your state as a U.S. citizen. It is important to note that the USCIS is not going to consider your application in the case of missing documents.
If you are applying by paper, but you still wish to receive an e-Notification about your petition status, you must file the Form G-1145.
In some cases, the USCIS may decide to summon you for an interview. This will help the officer assess your eligibility and ask for further documentation that you did not attach to your petition.
If the application is approved, your eligible children over the age of 14 will be scheduled to appear to take an Oath of Allegiance.