someone give me advice

so i've been talking to this really good looking guy on snapchat recently and we have gotten to know each other quite well and have played t or d a couple times not gonna lie. and i've decided to meet him in person by coming to his bball game tomorrow with one of my friends. i'm actually nervous and i know i shouldn't be and i should be myself. but what if i'm awkward towards him? he's really nice and i don't want to fuck it up. can someone give me advice about what i should do tomorrow? like what do i wear? how do i talk etc. thanks :)