A quick introduction: I'm completely new to game, and have just started reading Roosh's Bang and Day Bang. I pretty much have to do day game since I'm not old enough for bars and nightclubs.
The Situation
So I go in to this Five Guys and I see mostly groups of friends together. I do see one lone, cute girl sitting on a stool facing the window, but I couldn't think of anything to say. She had her food, a textbook that she was studying, and her bag on another chair.
I decided the elderly opening wouldn't work here ("Excuse me, is that a good textbook? I've always wanted a good textbook. All my textbooks are confusing as shit."

), and I couldn't think of any other openers appropriate for the situation. I started getting approach anxiety just thinking about sitting down next to her with no pretext, but then I started doing Roosh's worst case scenario routine.
I imagined the girl turning to look at me like I'm weird, the guys a few stools over laughing their asses off, the cashier suddenly stopping to take orders and hollering "Dude, that's so obvious! Hahaha!", and when I got on the internet later to ask for advice, everyone laughs and tells me I should give up on pick-up already. Even if all that
does happen, so what? Life goes on.
And with that my approach anxiety went away.
The Approach
After I got my food I sat down next to her. I still couldn't think of an opener, so I just started eating my food. After finishing my burger, I realized she's been reaching for her fries a lot. I decided to say something along the lines of, "Hey, can I try the fries?" and then "You come here often?" Not very interesting, but I knew I had to try
something if I wanted to learn.
I came back with more napkins and nonchalantly asked her, "Excuse me. Can I try one of your fries?" She silently turned the bag towards me. I reached in, grabbed a fry, dipped it in ketchup, ate and commented, "Hm, seems a bit dry." (Why did I say that? Don't know, just felt like it.) She didn't reply. I followed up with "I don't come here often..."
wait shit that wasn't what I was going to say "...so..."
well fuck. She remained speechless and turned back towards her textbook.
I finished up and left. That's my pathetic excuse for a first approach.
The End
Personal hindsight: If I hadn't assumed the elderly opener was not applicable, I could have thought of "Excuse me. Are those good fries?" and have probably followed up with a more natural conversation.
So. You guys got any tips, advice, or just general feedback for me?