Re: Older man, younger women
Ok, I'm not as far as you, but having hit on 10 years younger girls a couple of times, here is what I got
First, no, it's not creepy. It's creepy if you think it's creepy. Women care about confidence, status, self esteem, experience with women and all that. And that's actually what age gives you. You're actually more attractive to her than a man her age
And second, don't ever feel ashamed of your age, that's what makes it creepy. A 50yo trying to act and dress like a 25yo to hit on girls is creepy. A 50yo acting like a 25yo and hitting on girls, acnowledging that she is 25yo, is... a man, simply.
Accept the difference, and embrace it. If she were looking for what another 25yo could give her, she would be with a 25yo. Think about what you can give her. You know more places to go, know more stuff, like salsa or whatever, your conversation is probably more interesting, and all that.
As for the approach... If I hit on a girl 10 years younger than me, I will brace myself for really huge bitch shields. So I would totally ignore them, and be at my best, until they come fighting for my attention. And when I'm hitting on them, be clear about it.
I actually know a 50yo guy who is kind of succesful with younger woman, and he also goes very direct very fast. Your age is an instant disqualification (they will tend more to think you are not actually hitting on them), so you will need to make it clear that yeah, you actually are.
Seduction is a martial art. Reading books and talking to experts is important, and helpful. But you won't progress unless you go out there and fight.