Confused sort of Girlfriend - ex girlfriend problem?

When I met my girlfriend I went to her house and we started to know each other, we have same personality and interests, and I really love her, but I was scared in the beginning when we started to go out, I kissed her when I came to her house and when I left, yap that was not nice for me to do but I was afraid of going to fast, but I realized that that was a mistake, she got mad and broke up with me and her birthday is this Sunday and I told her I changed and everything cause I did a lot of thinking, and she told me that we will see when we meet again. I'm going to her house on Sunday on her birthday, but how must I react, she told me I should show her I'm not scared and shy, but I'm a bit confused here. When I meet her can I still kiss her to show her I changes, and care for her, and what else can I do to show her I'm the man for her, cause if it goes well we'll get back together again, but I dont want to screw it up, should I act like I'm her boyfriend again and hold her hand, kiss her and hug her. Really need help with this one, need some female advice.