A petition usually doesn't have the proof attached. The proving part comes later.
[In accordance with the Avvo community guidelines, this communication does not constitute "legal advice", nor does it form an attorney-client relationship.]
To start the action, you must file the Petition as well as the summons.
You must verify your petition by signing the declaration at the end of the mandatory form.
I assume the father is not joining in the petition. If that is the case, delete the joinder from the mandatory form.