Zentrode, first off well done for opening, it take a lot of guts and it's all progress baby!
I think Teens answer was little too specific, it's not really helpful for other situations where you're not at the beach or if you don't want to strip off and run into the sea like a loon..
You want to reach the 'hook point' - this is where the girls are happy to stay and chat you you, this is the point at which they ask you a question, i.e. they are interested in you. This can be anything from "so who would you fuck?" to "what's your name".
If you're just starting out, get a stack of openers, so after your jesus opener say something like:
Zen: Oh actually while I'm here, let me get an outsiders opinion. I can only stay for a few minutes before I have to get back to my friends but..
Then run jealous girlfriend or whatever other opener takes your fancy. This way you wont run out of material and eject prematurely.
Also at this point it's fine to just fluff talk.. "Where are you guys from" "What do you guys do" and of course the golden "How do you all know each other". The last one is great because it gives you a lot of hook points and a huge amount of info on the group. These questions are fine - it's all learning and helps you to calibrate. Although eventually you want to move to statement questions, which we can talk about at another time.
Lastly, you didn't mention it but were you standing over them or sitting? If they are sitting then the best thing to do is to get down to their eye level in front of them, sit on your calves - pay everyone the same amount of attention - maybe a little less for your target. This stops you from looking too leery over them and makes it much more comfortable for everyone involved.
As for isolating the target, don't worry about that for now, it's complicated and requires a much more detailed explanation especially in day game, just get comfortable opening girls and try and number close.
Hope this helps, best of luck (although we all know luck has nothing to do with it

) If you need any more help you can always ask or PM me.