First of all, if you use proper English then that can impress a girl. Secondly, you impress a girl if you just be yourself, if the girl can't accept that then move on and find someone new! Good luck! :D
Don't try to impress anyone based on race. You want to interact with another human being, guy to girl. And the best thing you can do to impress anyone is to be yourself, because you want them to care for the person that you are and not some phoney version of you.
To impress any girl of any age, you must treat her with respect and kindness. To really impress a girl you have to show her you were thinking about her and went the extra mile. For example, if she mentions a band she really likes make her a CD. Also, compliments impress girls.