What do i say to my crush, when i meet him?

Well i have beeen going to cricket games with the family over the past weeks, met a whole bunch of new people my mum introduced me to her friend who goes and we all chatted about men. My mums friend asked me what i liked and i told her. And she told me a guy who fits everything i want plays on the cricket team we support. I havent seen or met him yet, but ive looked him up on youtube and he fits everything i want in a bf. So my mums friend and his sponserer have put in a good word for me, so this Monday we're gong to watch a game whic he is playing. Just in case we do bum into eachother what do i say to him? or how do i act? how do i keep him interested? see i really like him and im scared ill act too desperate or too shy. Oh and also what can i wear to the game? 10 points :) thanks people