what qualities do you think one should have to impresss peop

The first impression is very important!
Mouth,eyes,face and smile can reveal it,can give a good impression.
and the dress,if your dress is very dirty,maybe you will scared her!so you should dress very neatly !and u should relax the tension,If people ask you questions,do not simply answer "yes" or "no" ,and u can ask some question about that guy,so the topic can continue.