what needs to be signed when apply 130 ??

[ayhd100]

I am ready to prepare I-130 forms. I have read forms but do not get clear idea. So just wanted to get quick help. Do I need to get any sign from my mother on I-130 or any other paper to send I-130 ?

My mother sign in hindi. Is there any issue or my mother needs to do thump print instead of sign in non english.

Thanks,