You pick your nose during class and wipe your boogers on your shirt. What impression might others have?
Not clean, gross
Someone tells you a joke and you laugh. They tell the same joke several times a day for the rest of the week. What impression do you have?
Annoyed, may think it's not funny anymore
Your classmate is struggling with the math assignment. You ask them if they would like some help. What impression are you making?
Friendly, helpful, kind