Procedure depends on state law where you reside and what exactly you are signing over. Rights? Custody?
No, she can only sign over her own rights.
How do I sign over my parental rights without going to court?
You need to be 18 & over to sign wiyh the ufc
only the mother does
With court approval
yes
No, see link.
The mother can, but not the father. see links below
She has to have possession to have filed for custody. Canada has no jurisdiction over the kids.
No. You will still have to pay child support for your children.
He can certainly ask, but you do not have to agree.
Since this has to be approved by the court, yes.