Kinny21,
It's situational though, your ideas would work for a girl who you've dated and slept with. It's important to make that distinction because if you haven't slept with a girl who has gone into auto-rejection, that wouldn't work. There's no way she would message you to see how you are doing if she's in auto-rejection. Also, she must have had feelings for you before if she would be willing to ask you out.
To sum things up, I'd say for a girl who's your ex and you've slept with her, your advice works Kinny because even if things did end on poor terms, there's probably a decent chance you can get back with her because she probably still has at least
some interest in you. Granted, if she's in the honeymoon phase of a new relationship, it's kind of hard to pull, but you can still do it, albeit it'll be tough!
If you dated an ex and you never slept with her, you can get her back, but there will be more objections, sometimes less passion, and it's usually a headache. If you were going to try again with a girl, I wouldn't suggest it be with the Ex you never slept with. If a girl is your ex, there is a reason for that, so you'd be much better off meeting new girls; however, if you're in a tough logistical situation such as mine, you can resort to prospects, which I'll mention below

.
If you screwed up with a girl, like texted her too much or appeared a bit
off, the comeback shouldn't be too hard. Where I live, there isn't really any place to go with a lot of girls, street game isn't an option (I wanted to do that), and I live with my parents so it's a tad unfortunate for doing pickup. The population in my town is like 90,000 and all we have is a mall/theatre and there aren't many girls, let alone
attractive ones around. Also, word gets around fairly easily among people, so even though my town isn't a small village, you could fairly easily obtain a reputation! The good thing is, I've gained a
ton of knowledge off this site so I'm going to master my fundamentals this summer and effect as many comebacks as possible! So for any of you guys out there, if you want to get a girl back where you barely talked to her but you screwed up, you could make a comeback within a few weeks. The longer you wait, probably the better as Kinny21 mentioned, because they'll have to reevaluate you, and if you have improved a lot during that time, she'll take notice and like what she sees

. As for me, I'm going to line a bunch of prospects up that I've met from school and go on dates with each one and hopefully escalate with each in my car

.
Also, if you screwed up with a girl really badly like I did with mine (not escalating, not rewarding investment, coming off needy, auto-rejection, friend zone etc.) I wouldn't bother with her at all. If you were to effect a comeback, preselection would probably help, among other things, but in my case, the girl is probably not thinking about me (I don't really care at this point). So yes you can get her back, it would be a hell of a slog though and you'd have to wait at least a year, probably more though. I tried waiting 6 months then messaging her, and she ignored it. Now that's an obvious nono for me in this situation, but that's how you learn

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Any thoughts Kinny21? You seem to have some solid insight on what to do in your situation

,
Garrett