How can I show confidence through body language in an interview?

excellente show confidence dody language is with EYES  because it reflits the good and bad think in body when you see any person you translite your message by eyes is safty way to receive it and understand it  however the other sens or organs they demontrate the apparent think in body.so you must be very concentrete and very silence with high serenity and calm jsut look and see with your eyes then you smeak with your body . good luck

the tip of your feet always point where you want to be, so don't point them to the door cause that means you want to leave...

use your left hand to make technical gesters

don't scratch too much your head or your face

don't rub your hands too much

look in the eye

serious face while listening, smile while speaking

be yourself, laugh if it's funny, and if you have a funny classy comment to say, why not...

TRY TO NOT PLAY WITH ANY JBECT DURING THE INTERVIEW