My tips:
If you've got time before get your mum/gran/friend to rehearse you by playing the presenter.
It's a doddle if you're just talking about your self & not promoting any cause etc so enjoy it
Don't rustle & shuffle your notes
Focus on the person asking the question
Try to use short culmulative sentences which build on each other but could stand alone-this stops you tying yourself in knots.
At the end of the interview, when the presenter closes the piece, don't forget to finish off with a thank-you.
Good luck
Only an "s" stands between laughter and slaughter.