I am no pro, but I discovered that for me it works much better to use what I'll call "nonverbal direct indirect" approach.
What I'll do is I'll open a girl indirectly, and at the same time state my interest through my body language. So I'll just give some good eye-fucking, with strong, lustful eye contact and a slight smile, and at the same time ask her how's her day going. DO NOT underestimate eye contact, your eyes are your most sexual organ when it comes to attracting women.
What this does:
1. You speak directly to her emotions, showing confidence and sexuality while at the same time using the "mirror neuron" effect.
2. Law of the least effort, you are not really doing anything grand. From the outside it may look like you're just having a conversation.
3. 48 laws of power, law #3 - mask your intentions.
4. Mixed signals - interested, but far from sold.
A variant of this that I use in the club - "nonverbal direct"
I'll always wait until she's at the bar.Just pat her on the shoulder, look her in the eyes, check out her body for a few seconds, then back to her eyes and stay there for several seconds. Then invite her to dance or touch glasses with her if you're drinking. 0 words used.