Hello, Lucy, I heard you did a good deal in interview.
It's OK.
What did you do in the interview?
I observed the interviewer's manner, mien and gesture carefully besides paying attention to mine.
Are all these helpful for the interview?
Of course. The manner of shaking hands can show a man's character. For example, the interviewer who shakes your hand lightly, is a easygoing man although he looks cool.
Anything else?
You can discover interviewer's eyes because they can show his thoughts, and can judge whether he is interested in your words by his gesture and mien.