Bear in mind that you don't have to prepare a script ahead of time. Just know what you're looking for in a woman and trust yourself to generate the appropriate fluff talk when the time comes. If you freeze up while you're actually talking to her, just relax and tell her that you're a little shy and not really used to doing this sort of thing. She'll appreciate the honesty and may even help move the conversation forward if you don't run away with your tail tucked between your legs. If she doesn't, then simply taking a breath and relaxing may help you get over mental blocks. Remember: If you're genuinely curious about her then you'll never run out of stuff to talk about.
More example scripts would help guys out a lot. Advising someone with social anxiety to "trust yourself to generate stuff when the time comes" is putting a lot of unneeded pressure on them, small steps. Your steps following this aren't very practical and wouldn't give me much confidence if my initial convo failed. New guys pretty much assume they are going to fail, they want it to seem fail safe. Practical back up plans make people happy. Not many of the newbies are monks and able to meditate when things go wrong
You can achieve feeling compassion for someone by making an earnest effort to imagine yourself in his or her shoes. Everyone's got a tough journey to walk, and, believe it not, we're all trying what we think is the best we can with what we've got.
If you had more exercises to adopting this perspective than just one for this seemingly important part, I'm sure guys would have better success.
It's definitely OK to use phone calls to just shoot the shit and have shallow, flirty conversations, too. In fact, I highly encourage doing so before you try arranging a meet up. It'll get the girl accustomed to just talking to you without any pressure. How do you have a shallow and flirty conversation? Talk about anything while ramping up your sexual state as you would be doing face to face. You'll find the answer while you're in that state. It's like only being able to find the answer to a zen koan only through the state of meditation.
So there are no gambits, examples, or routines that can help? Of course I'm being facetious, there are plenty of things you can do here like sexy points or role playing. Examples of these would help people who don't know how to have a "flirty conversation" figure that out.