I was supposed to take her out somewhere but she asked me if I wanted to hang at her house since she only lives with her mom and her mom won't be around that day. So I guess that's a pretty good sign. She also told me that her room is off limits but then she changed her mind. Only thing I know is I have to advance on this. I just need to know how. I know there's gonna be a point we're gonna be watching Netflix and I'm gonna be sitting next to her. What do I do? How do I slip my arm around her without making it awkward, how do I get her to cuddle, etc. is pretty much what I'm wondering. Thanks!

EDIT: I should mention I'm a 19 year old male, she's an 18 year old female