I am hanging out with alot of Black people, what do I do to fit in. Im white.?

Im white but almost all of my cousins are black, I was visting my cousin for a while and I went to a party with him he lives in Baltimore in park heights and I was the only white person there it was weird, I smoked a bit with them and it was different then parties I usaly go to, Im from Virgina. Im gona chill with him again later this and I want to know how to fit in better. I dress alot different the everyone. I can show some pics if you want. It was one of the best parties I have been to. But I stood out to much I think.