How to start a conversation with her?

[john]

Ok this girl who goes to my school followed me on twitter, and i didn't recognize her but saw that she was cute so started a conversation with something like hey you look familiar where do i know you from. Well we rambled on a little while about school and what not but now our conversation has kind of reached a dead end. The last thing I said was "sorry i just realized Ive been rambling a lot my bad haha" and she said "its all good"

what should i say now. I don't wanna come off too strong cause I don't know her at all. I don't want to come off creepy either like "omg why is this guy still talking to me" especially if she is not at all interested. Any tips? I eventually want to tell her that she should text me but i need to ease into that.