Tbh, I've honestly found being very very blunt works.
Not rudely, just blunt.
For instance, if I'm talking to a girl, I'll simply say. "I find you very attractive, and am interested in you".
If they continue to conversate, you're in.
If they don't, it wouldn't have been worth the trouble.
Also, it helps to have a decently sized penis. My dick is 8 1/2 on a good day. If you have anything below 6 when fully erect, you will run into some issues. Anything below 5, and you will really find some issues.
I'm speaking from experience I've had when talking to male friends of mine, and also some reading I have done.
perfect dick sized range, 6 1/2-9. Anything bigger, annoying, anything smaller, well, harder to work with.
Be blunt, honest, smart, and witty. I have found girls don't appreciate anything as much as intelligence, even if you're ugly, intelligence can make up for 40% of you fugly face. Now if you're fat.. And I mean, FAT, like.. if you stand up and cant see your wiener without sucking in, lose some weight, then try again.