Filing I130 for brother : Is photograph required ?

[imminfog]

I130 Questions

I am filing I130 for my brother.

1.
Do I need to submit his or my photograph with petition ?

2.
If I submit peition with following documents,
copy of my naturalization certificate
copy of two affeidavites for my birth ( mother, grandmother )
copy of two affidavites for my brother ( mother, relative ).
Will it be sufficient for petition to be accepted ?

3.
Could I submit additional documents later on, after petition is accepted ?e.g. my bother's secondary birth evidences. marriage cetificate, children's birth certificate ?

Thanks.