Take both copies of your I-20m (the School Copy as well as the Student Copy). SIGN both the copies.

Carry the original GRE & TOEFL Score reports and produce them when asked for your scores.

Carry the Bank Passbook/Bank Statement (Originals) of your sponsor...In Case of a distant Co-Sponsor, you can carry the photocopies of these documents.

Originals of FDs of your main sponsor are required, whereas Photocopies of FDs of Co-Sponsor will suffice.

Take IT return papers of last 2 years.

The VISA photographs are known to the Studio people, so you just go and tell them to get a VISA photograph. It is a photograph, showing your face closely. It has a white background, and its dimensions are 37 mm X 37 mm.