Just be yourself don't try to act cool and awesome just to impress them just be yourself maybe he/she will be impressed that you're being you're self and not trying to be like other great people
YOU DO NOT NEED TO IMPRESS ANYONE BUT YOUR SELF.. IF SOME ONE DOES NOT LIKE WHAT YOU WEAR TO SCHOOL OR IF YOU HAVE A LESS EXPENSIVE CELL PHONE .. SO WHAT , AS LONG , AS YOUR HAPPY , THAT'S ALL IT MATTERS.
Well be yourself, get chatting to this classmate and show them that your a great person to be around - sorted.