The old style Mystery (or MM3) model is pretty outdated and frankly too linear and rigid to be of much help any more.
In general, your basic steps (according to the indirect system) should be:
Open - say something that the girl will hopefully respond to, e.g. her opinion on something (opinion), directions to some place (functional) or something about what just happened around you (situational)
Transition - move the conversation from the opener topic to something else, for example a cold read about something you noticed about her (e.g. "you know you strike me as a creative type, you're in art or fashion aren't you?")
Attract Her to You - e.g. tell a DHV story that highlights positive attributes of yourself without bragging, ("actually my friend Charlotte is involved in the art scene and she invited me to the opening of the new Saatchi gallery exhibit last Friday. Have you been yet? They've got some great Damien Hurst stuff there which I really liked, although I wonder how many animals that guy has to stuff with formaldehyde before he moves on to another project, you know what I mean?")
Qualification - find out things about her using screening questions, and then compliment her (subtly) about those aspects of her personality that you value and find attractive. ("I love being around positive, outgoing people. I get the sense you're like that too... Her: Oh yeah cuz this one time me and my friend....blah etc. You: Yeah exactly! You know when I first started talking to you I kinda felt you were a bit of a dork but actually I see you're pretty cool after all...just don't let it get to your head
Comfort - Try and isolate her at a table or something so just the two of you are talking. Give away small tidbits about more personal aspects of your life. Pretend it's an "embarrassing story" when actually it's more likely a DHV. ("I don't normally tell people about this but I was actually in a band back in university. We played some small gigs and it was a lot of fun but in the end I moved on and although I keep my guitar up for fun we obviously didn't make it into the big time and it's something I kind of regret but am happy about having done at the same time...have you ever had any experiences like that? Her: oh yeah when I was a kid I used to...blah whatever..."
Seduction - Extract her to your place, escalate physically and deal with and LMR (last minute resistance) using freeze outs, by not getting pouty when she rejects you, breaking off contact and doing something non-sexual for a few minutes (like changing the music) and then re-engaging
That's the basic setup. Remember to be escalating up the kino ladder, so that you get a touch on the shoulder / arm during the opener and transition, another one (at least) during your DHV story, and a bunch of further ones every time she passes one of your screening questions, gives you an IOI (indicator of interest), or exhibits compliance, such as getting you something, following you, letting you touch her, etc. By the time you get to comfort you should be easily able to touch her on the small of the back, leg, etc. A good way to escalate physically is to take "two steps forward and one step back" so once you've pushed all the way up to holding her around her waist, drop off contact completely by noticing something else, and then re-engage. This makes her WANT you to go back to touching her, thus multiplying her desire to physically escalate.
As a final point, NEGs (backhanded compliments) or RAPPORT BREAKS (small insults) can be used during the opening, transition and attraction phases to help build attraction by lowering her value and raising yours. (e.g. oh cool nails, are they real?) Use sparingly and drop this once you reach comfort because you no longer need to build attraction once you've got it.
This turned into a much larger post than I was expecting but I hope it gives you a helpful overview without being too cluttered. In general I would mix and match various methods to suit your game and not worry too much about details. You REALLY learn when you're out there in field, because every mistake you make yourself, you learn what you did wrong and what not to do again.
