I used to conduct job interviews.
A lot of desis came in and they sweat to death.
I used disc profile system.
Man recruitment was fun.
But then i had to stop it cause i assigned a lot of useless people just on their looks.
Now them people are doing copying/scan/printing sh*t work.
Don't worry.
Be fresh, have a smile on your face.
Most importantly be confident.
And prepare yourself some questions to ask the interviewer(s).