To improve your relationship with people and especially your contribution at meetings, make sure that you make eye contact with people. Eye contact shows that you are interested and illustrates that you are listening and that you value the person.
Now when I say make eye contact - don't go over the top and stare as that can make people feel uncomfortable! But at meetings try not to be looking down at your writing pad for minutes on end. This gives the impression that you are not interested, bored etc. Look up and make that eye contact with the person speaking, it will also help pull your body posture up which again illustrates a more professional approach.
So the eyes have it....make it your aim to show your interest, to show your commitment, to show your professionalism.