A good citizen is some who respects others and their property.
He/she is helpful and considerate, willing to put others first.
He/she listens to the views of others and thinks about what they have to say.
He/she helps people who are not in a position to help themselves.
He/she respects the environment and does not damage it in anyway.
He/she works hard.
He/she is well mannered and pleasant.