Escalating sexually means basically that you have to talk to girls about what turns you and them, on (you have to build it up first of course )
So they can get in the mood of sexuality and romanticism and then you can just make them a very interesting offer and you take them home.
my strategy
Something that I do is tell them that I want to give them a full body massage with essential oils (find something you personally love) and I bind it with the previous stage of sexual escalation so they flow together. And I describe how they would feel and they usually come if you have done the previous part right.