1
Posture and Eye Contact
Sit upright, don't slouch, and keep your hands visible and relaxed rather than fidgeting. On camera, look at the webcam (not the screen) when speaking, so it reads as eye contact to the interviewer. In person, hold eye contact naturally - not a constant stare, just don't look away every few seconds.
2
Tone and Pace of Voice
Speak a little slower than feels natural - nervousness tends to speed people up without them noticing. Vary your tone - a flat, monotone voice can come across as disinterested even if you're not. Avoid filler words like "um" and "like" by pausing silently instead when you need a moment to think.
3
Active Listening
Nod occasionally and use short verbal cues ("I see", "right") to show you're engaged while the interviewer is speaking. Don't start forming your answer before they've finished the question - it often leads to answering the wrong thing. If a question is unclear, it's fine to ask them to repeat or clarify it.