Hey whats up guys? So I went to a club tonight and ended up getting two number closes. Not strong closes by any means, but this is my first time getting anywhere remotely close to a success.
So this is a club with blasting music and in order to hear each other you have to yell right in the person's ear.
I was talking to this HB8 for about 15 minutes while my friend kept her friend occupied. It was just basic random shit like where are you from? where do you go to school? etc. Then they both left to supposedly look for a "friend." I wrote her off in my mind but saw her on the dance floor again a little bit later. Noticeably far away from me. But then she came back over to where we were and she said her and her friends were leaving. She kissed me on the cheek (no prodding or anything from me). I took this as an IOI. She started to walk away and I asked her for her number. She gave me her number and then told me her name without my asking.
I'm an American in Australia and I don't know exactly what the kiss on the cheek means. I was talking to another girl later in the night who kissed me on the cheek and said it was nice to meet me and she had a boyfriend. So perhaps it means nothing?
After this girl I was talking to another HB8 shortly after. Same basic idea. Talked about where we went to school and what we were majoring in. Then after like 15 minutes her friends were leaving so she left too. I asked her for her number and she gave it to me along with her name (again I never asked for her name). Then I fucked up (at least im pretty sure I did). I asked her if she wanted me to kiss her. We had been dancing pretty close by Australian standards. But she was already in the process of leaving with her friends. No surprise but she said no. And I was like "okay."
In both cases the HB8s walked away right after giving me their numbers so I texted them a message saying "Hey im xxxx btw

." This way they had my name and my phone number.
I need a critique on how to improve what I did. What did I do right? What did I do wrong?
Most importantly, what the fuck do I do now?
Do I call them? Do I text them? How long do I wait? Should I wait for them to call me (from what I have heard that is not a good idea)? What do I say if I call or text them? I have never been in this situation before. I need all the advice possible.
Thanks guys.