Donot Submit any kind of paystubs from your employer and so forth..U r on F-1 Visa, not here to work..An invitation letter from Your DSO will be enough from your side..

Bank balance, CA letter, Relationship verification etc will be required from Nepal when your parents r applying for VISA..When i Invited my Parents , following r the list of docs that my parents have submitted to Counsellor office in Nepal..

1. Invitation letter from University written by DSO mentioning that i am graduating this semester and my parents want to be a part of the occassion.
2. Relationship verfi from Wada or nagarpalika.
3. Bank statement of 10 Lacs..
4. property evaluation.
5 . Letter from parents employers mentioning that they r working in blah blah office..(if ur parents work for a government Job , then there is high chance of getting a VISA)
6. CA evaluation
7. Required forms to file visitor visa

I am sure they will get the VISA for ur graduation..


By the way r u in pre-completion OPT,CPT or Post-Completion OPT?