How to make a good first impression on a classmate. The first thing is a Speaking polite. Because the speak bearish a not bad thing, but speak by using the euphemism polite for speak with the classmate for the first time. The second you should dress modestly. Because dressed make a orderly have good looks , not inoffensive make a impression in classmate. Finally build up friendship with new friends always. Because build up friendship with new friends make people other wanted to friends with us. For all this is how to make a good first impression on a classmate.