It completely depends on the individual boy and what impresses him.
It also depends on what you mean by "impress". You being yourself should be enough to impress a boy, if that doesn't impress him then he's not worth trying to impress.
Look cute for them and hit on them. Try to make moves on him when you feel it is safe. Some would say it'll probably be best to let him go and not try to impress him at all; just think of how you would feel if a girl tried to impress a guy you're with.
My opinion would be to just be your self :)
just try your best and impress Be nice to him Take an interest in what's important to him Smile Be interesting
get anarexic
Be yourself.
First you have to Find out how your classmate behaves then find out what he/she likes. Think of something that would impress he/she example (boy) getting he's favourite record disk that has not came out yet or impress he/she by getting yourself on a high popularity level if he/she would admire that.
You won't impress a boy if you talk about the boys you dated before. Don't say nothing about your ex-boyfriends. Would a boy that talks about how much he loved his ex-girlfriend impress you? Everyone hates school because school is boooring… really boooring. You won't impress any boy if you ask him about math or homeworks. He may even start avoiding you. It's useless to try to talk about football or video games with a boy that you want to impress if you don't know nothing about football or video games. Imagine how stupid a boy that tries to talk with you about lipstick would be. The same thing is with girls talking about video games and football.
be hot and romantic
be yourself
be yourself,and tell him exactly how you feel,, thatl impress him.
Of course not. 10 year old girls shouldn't do ANYTHING to impress a boy.
okay well im a girl myself. and for me a boy would impress me by playing sports and kindve showing off a little being tough around his friend but not to the point where he acts fake and really isn't tough but just act like yourself that's one of the main things that girls like about a boy is when they act like theirselves and don't fake it at all that's how you can impress a girl.