It's no mystery that a pickup artist needs some fresh tactics to put into their arsenal, here's one-

  It's called: 'Perfume to Her Room' 

I usually use it on a first date, but for the more advanced pickup artist it can
also be used immediately after opening her. Lets assume for this
example that you are meeting her at a bar for a date and you've just
walked in. (Because naturally you were later than her right?;)

Step 1:  Establish a reason to get physically close to
her. (hug, high five, doesn't matter)

Step 2: Notice her perfume.

Step 3: Say something like: "Oh my God, what is that?? That smells
amazing!"  Even if it stinks. You now have a legitimate reason to
continue smelling her throughout the evening.

Step 4: Look for opportunities throughout the interaction to keep
smelling her.  You can say something like, "Man, your perfume
really is great, I gotta smell that again." Don't ask for
permission to smell it, you simply can't resist! 

Providing you are both having a decent time this trick will allow
you to smoothly transition from innocently smelling her to
eventually nuzzling your face in her neck.
 
Now at some point she will become totally conscious of what you are
doing...but that's okay!  Usually by the time that happens you've
already created a good amount of intimacy and she is fine with it.

So you may be wondering, 'how many times over the course of a date
should I actually smell her?' 

As many as you like. Usually I am in the ballpark of 4-8.  The
important thing is not how many times, but whether or not each time
is progressively becoming more intimate.

You may also be wondering, 'when is the best time to do it?'

I personally like to save it for right after a highpoint in the
interaction.  (A shared laugh, a moment of meaningful eye
contact, etc.) However, the technique can also function as a
failsafe to pull out of your back pocket if you run out of things to
talk about or you want to change the subject.

And finally, what happens when she says, "I'm not wearing any
perfume."  Simple adjustment: Do everything explained above
just change the word perfume to soap or even natural scent. Ex:
"Not perfume?? No way, I don't believe you.  Let me check again...
(you double check;) Well, you've got the best damn natural scent
I've ever smelled. Wow."

Now that's dating advice for ya;)

             Enjoy,

                    Julian