Psychology: Mirror Effect

First meeting,If you want the other party to gain trust ,Make each other feel comfortable ,you can try to mirror each other every move .
In psychology this is called the mirror efect.
For instance :If your date is sitting with you opposite side,he raised the cup with his right hand,you can also use your left hand if nothing happens cup up ,because the mirror of his right hand is yours
Left hand.not need for 100% imitation ,80% is enough .
doing so will make the other party instantly treat you create a feeling of intimacy and familiarity .