Here's my dumb make-out routine.
Caveat: only tested during night game. It's a set of crutches that are nice to use when you're a bit unsure, or starting out at this stuff. And it's also useful later, for shits 'n' giggles.
Setup: She's in "isolation" with you or "semi-isolation" with her back turned to her friends, or you're a bit away from her friends, so she in the least feels a bit safe from feeling judged. So, you've definitively hooked her already, and she's showing some compliance by coming with you somewhere more private, even if only a few steps away from her friends. The routine also assumes you already know where's she's from, so if you haven't already asked, find out where she's from... (It'll become important later.)
The dumb routine: If you suddenly feel the urge to kiss her, ask her this:
"Are you a good kisser?"
She'll say yes or no, but most girls say yes and start to brag somewhat, depending on how riled up they are. This is when you subtly start disqualifying her with stuff like "Nah, I'm not convinced. I've never had a good kiss from a girl from Ohio..." (or whever it's from.) Or dismiss her straight to her face that you don't believe her, and that all girls from Ohio are horrible kissers.
Invariably she'll deny this. That's where you cock your head and go: "Prove it!"
(And in the off case she
doesn't deny it, then you can still act surprised and tell her that you don't believe her and then have her prove what a horrible kisser she is....)
If she hesitates, go: "Well, what are you waiting for?" And perhaps pull her closer. Then make out with her lol.
If she doesn't want to, you can dismiss her even more and go "I knew it. Not only are they bad kissers but pussies too."
Important. Don't be all serious when you do this. This is all a joke. It's a flirt. You're not doing it because it's the end-all to get a make-out with her. You're doing this to tease her, whether you get the make-out or not. Perhaps she just gives you shit and token resistance at first, but then - when you show that you're unphased by her shit tests, she will jump you and stuff her tongue down your throat. I mean, women are strange and different, so her reaction will wary - sometimes wildly. But it will
always be fun and surprising to see her reaction! So, never crave the make-out, but instead crave the thrill of her bs, laugh of how it catches her off guard, or how it doesn't. And then have a back-up solution for it. In essence, you want to be this priest:
No matter what she throws at you, you always want to have a backup solution. And this routine gives you that, though cheesy and dumb.
Some general social dynamics of make-out, as a bonus - in case you want to "natural game" this stuff: Usually make-outs work like this: If you suddenly feel the urge, but gets unsure, that's when you should do it despite your anxiety. If you suddenly ask yourself "Hm, would she want me to kiss her right now?" The answer is usually always yes. She might still reject you, though, if you're unsure. But here's the good part! It's totally chill! If she rejected your kiss, it usually means nothing at all - unless you make it so. So, just act as if nothing, and continue chatting and try again a bit later. What really happened, is that she got a bit starled, because you did indeed come into it a bit too early for her, but now she knows that you're a man of action. Moreover, she know can trust you more, because you actually respected her rejection. This is highly sexy to women, because you're both showing that you're capable, and that you're able to show restraint.
Hope this helps!