Need Sample Petition to Terminate Parental Rights

I was doing a search on line for how to get my ex to terminate his paternal rights and your thread came up. Did you ever get a sample petition? I'm not really sure what to do from here. I haven't seen or talked to him in over a year and a half and he has since moved out of state. I just want to terminate his rights so he can never come after my son. Can you help?