Tarot card reading takes a lot of practice, and it's hard to carry around a deck of tarot cards. Try something like aura reading. It's more flexible and you don't need to bring anything. It's like an invisible prop. Palm reading is a bit overdone, and if you are so nervous your palms are sweaty, she'll know right away.
Or try this one:
Walk through the club, and when you see a group of girls, stop dead as you pass. Always choose the girl in the middle and furthest away. That way it's clear that you are an entertainer. Look at your target and say something like this:
"Has she told you yet?"
She'll look at you like you're crazy.
"Who?"
"I'm sorry, I thought you knew. I'm a spirit counselor, and your spirit is trying desperately to tell you something," and look to her right or left (wherever there is space).
"What?"
(This is when you can have some fun)
He's telling me to relay the message. May I?
"Yes, of course!"
Your spirt guide says you should be careful. That there are angles in heaven who are jealous of your beauty. That they will try and take you down the wrong path, away from true love. That when you find true love, you must seize this opportunity as quickly as possible, before the jealous angels are able to interfere.
(Of course when you mention "true love" be sure to gesture toward yourself as obviously as possible)
Just when it starts to sink in, then bounce. If she chases you, guaranteed sex.
This way you can go anywhere there are people, and drop in this pattern whenever you see a group of girls. Whoever follows you is a high probability sex candidate.