You have two choices when trying to hit on a tall woman.
1. Grow a few inches
2. Deal with it.
They aren't going to get any shorter. Life has given them a filter for those who don't have the confidence(Cojones) to talk to them. Most of the time, you can tell straight off because it's the only thing the guy is able to talk about- 'Wow, you're tall.' Good one buddy, I'm sure she hasn't had an entire lifetime of people pointing that out.
To be a bit more accurate, I love tall personalities. The confidence to be comfortable with who you are, world be damned, is rare. Some never learn to accept themselves or their quirks. Weird is good. Weird is attractive. Weird is awesome. However, how can you expect anyone else to accept it if you are busy stomping out the best part of you?
Don't let social stigma's push down your uniqueness. Negative reinforcement can only feed seeds that are already planted.
Sure, people are going to misjudge you, it's inevitable. Since you can't prevent it either way, why not give people the chance to like you for who you are?
What assets that make you the beautiful person you are do you consider a liability?