Hey guys, i've been a little bit of a lurker on this forum and others but saw this post and had to chime in because I have a little bit of experience in it, because my last two girlfriends were 6'1". Some tall girls don't get approached because guys are intimidated, this includes sexy, tall, slender dancers, models, and your girl's next door. There are PLENTY of sexy, tall women out there so I think you have to just assume attraction and approach them!
They way I got these two girls, I met them out at bars, one I knew through a friend, the other just came up to me to ask me for a smoke. BOTH of them I hooked up with the first night and they of course said "oh i usually don't do this on the first night" lol ...
The key is to TOUCH!! Touch them on the hips gently when moving around her, or if she's sitting you can wrest your hand on her shoulder, mess with their hair. If you're at a bar, let your legs touch if you're sitting next to her or beside her somewhere, or touch the inside of her elbow when you come up next to her or are moving to go some place.
Because they are tall, slightly self conscious about it, and not getting approached often even though they know they are getting checked out all the time, they respond VERY well to touch. This will also work with a shorter women, but I feel they respond much better to it and they instantly gain a comfort level they have trouble getting with some people. Be playfull, don't worry about their attraction to you, just be attractED and show you are comfortable with the fact that you are into them and you don't care if anyone see's you hitting on her.
As far as dominance is concerned, both of these girls loved to have a leader in a boyfriend, and a dominator in the bedroom. They liked their asses slapped, hair tugged, and hands in their butt pockets. Make them feel sexy and cute because they are often self conscious about their femininity.
Hope this helped and wasn't a book...