there is a saying beauty is in the eye of the beholder. this means that everyone has a different opinion of what is beautiful. to say a woman is very attractive one can say that she's gorgeous beautiful or stunning. a man is usually described as handsome. men and women can both be described as good-looking or charming. it is also okay to say that a man or woman is cute or adorable. however these terms are used to describe animals and children. they are not always used as a compliment for an adult.
if you know a person and their family then you can describe them by comparing them to their relatives. you could say you' re just like your mother she acts just like her sister or he takes after his father. these expressions all show that the person is very similar to their relatives in appearance or character.
to describe a person's character you could say someone is an extrovert or introvert. an extrovert is very outgoing talkative and assertive. an introvert is more quiet or shy.