Hi

Young pua-starter here looking for tips on how to pick up a bit older, working girls

Okay, so here it goes.
Im 16 years old and i live relatively close to a very small store. When I'm there I usually buy a coke or something. Behind the counter there's alway a really good looking HB(i'd say about 9.. and trust me, i'm very picky). She is abit older than me, probably around 19. She speaks a different language than me (although, it's a very similiar language). Maybe something about her language or nationality could be an opener?
Generally speaking, it doesn't appear that she notices me in any way other than a customer. Honestly I dont't really expect her to either, but any info is good info.. right? I don't know if there is anything more to add about that, feel free to ask though.
Not far away from that place there is also a pool. I don't think that she does alot on her free time, since this place is pretty much a nowhere. I'd imagine that place could be a good place to be with her.

A little info about me, other than my age: I consider myself maybe a little above average-looking, pretty normal i guess.. Just ask for whatever if that could be relevant.

TL;DR
Im looking for tips, or openers on how to pick up a HB9 older than me when she is working, how to make myself interesting, stay interesting, basically anything relevant. There isn't alot of other good-looking girls nearby, so I dont really want to miss this chance (or if anything, practise).

The best approach would be to show her a good time & get her wanting more. Make her laugh & enjoy herself. Give her all those great emotions & gain her trust. Then maybe say something like "you know you're a really cool/fun person.. we should hang out sometime." to close. Maybe even through in that bit about the pool.

This is the attraction phase. Focus on getting her to like you.

She's very likely to have picked up the signals you've subconsciously sent to her regarding your attraction to her. Have you noticed her recuperating any signals, for example eye contact or playing with hair ?

Thanks Above The Law. I knew most of that already though, I'm looking for a bit more concrete things to say or do.
That's the thing though. She is probably 3 or 4 years older than me, and a HB9. Considering im younger (sadly), and not a 9/10 (7, maybe 8/10 on a good day), I get the impression of that it doesn't seem like I'm anything else to her than a normal customer that wants a Coke.
She's probably bored and pretty tired most of the day too, so she probably wouldn't give much fucks about anything.

With uglier girls I usually tend to get the eye contact and they play with they hair alot. However, those girls that do that around this area is not really girls I'm interested in.

There is your opener.

I take it you haven't spoken to her aside from the ring up? In which case you are nothing more than a customer lol.. That's why you must build a relationship with her. Give her the opportunity to get to know you & vice versa. Then you become something special(whatever that may be).

And if she's bored all day, then be that interesting interrupt. Again, learn to attract. Cultivate a good energy independent of external circumstances.

Don't over complicate things just start a conversation and go on from there.