Think of body language like not playing with a pen, sitting upright, not slouching and speaking clearly.
Think of perceptive questions to express that you're curious and have thought about the opportunity.
Think about your responses.
Do not be worried to declare you don't know an answer.
Advice for those looking for employment:
"Whatever jobhunting plan used, following up and making sure you keep tabs are essential for earning that role. Those that don't store such info frequently forget important contacts, likewise favour with potential businesses."
It may be nice to have:
Articulate, excellent communicator, tenacious and dedicated