(GIRLS INPUT) What should I do on this date tomorrow?

So tomorrow this girl and I are hanging out for the 2 time. Last time we had a good time and we watched a movie and hung out. We were both sitting on the couch but I was on one end and she was on the other with an empty space between us. Tomorrow when we hang out we'll probably watch a movie at my place. Would it be awkward if I sat close to her or should I scoot over during the movie? Put my arm around her? I sorta know what to do but I need help on the timing. Please help! :)