Be yourself.
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.
get anarexic
The same way you would elsewhere. Different things impress different people, there is no single way to do so.
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.
you flirt with him or dress to impress
You don't do it by trying to.
just be your self
Well if you are going to impress a boy you should wear something reAlly nIce and make eye contact with him.and why not give him a smile(:
My opinion would be to just be your self :)