I just met a girl, We text but I dont know what else to do, please help?

I met a girl in my drama cl whom i like but the cl is over. I rarely go up to her and talk even though i walk by her every day, I do text her often though. I just dont know what to do. Please help me, how do i start to talk with her. How can i make my text messages interesting, please give me specific stuff i can say to make her say awww, or laugh. Im a junior and she is a freshmen, she is a nice person.