Remember to be polite and keep smiling, especially when chatting with the girl you have a feeling for. Your gentility is the best way to impress a girl.
When you are having conversations, pay attention to the intonation and control your voice. Generally speaking, girls won't like boys who speak loudly. Because it would let them feel uncomfortable and even sounds like you are yelling at her. So try to speak softly, then she is willing to talk to you even if you bring up some advice.
2.Avoid Serious Topics
Avoid chatting about professional knowledge when talking to a girl, especially if you are in different majors. It will make her feel ignorant and frustrated, and the conversation will become awkward.
Try to talk about family, entertainment, or the small things around you which could make both parties feel relaxed and happy. Serious conversation would only depress you and the other one, thus it’s better to keep away from these topics.
3.Read Her Face
It is very important to learn to read people's faces while talking. If she is not interested in what you are talking about, she will show impatience. It’s time to change the subject, otherwise, you'll disappoint her.
And you should learn to observe the people and things around you. Don’t talk too loudly in public, or else you will be regarded as impolite. If you're talking in a quiet place, try to calm down or you will scare her.