If you decide to use peacock theory, I would recommend you to gradually improve. Make sure you are comfortable with what you are going to wear. Don't overdo it. Your image and your attitude should be congruent. If I tell you to picture a rock star, a business woman, and a doctor, and than I tell you to describe how you imagine they carry themselves at a nightclub, im pretty sure you will have a pretty distinct description of them... but somehow congruent with their look. If it looks like you are trying too hard, its going to work against you. You need to be comfortable with your image, and from what I read, that is not something you have a problem with. I see you are comfortable and confident with your physical appearance. Your main issue seems to be your attitude and the way you carry yourself, that impression that you give to ppl after they approach you.
A practical advice, use something on your hair such as a fashionable hat or hard headband with a flower, a bow, or feathers. From your description, looking attractive is not an issue, so you will get approach regardless. The point of using a cute headband or head accessory is to look less intimidating, meaning... the hotter a girl looks, the more intimidated and guy will feel about approaching her. When you think of a flower, or a bow or something alike, dont you associate it with positive feeling such as tranquility, happiness, warmness?! At a subconscious level, guys will respond to that. They will approach you with a lower energy level, gentler. This will help you feel more comfortable interacting with them because they are not gonna be as hyper. Im not saying that you want a very relaxing guy... but at this stage, I truly believe you need to work on your attitude and you need to interact with ALL kinds of people... men, women, young, old, attractive, less attracting. You need to learn how to calibrate and give yourself a chance to listen to ppl. Im not saying that you have to put up with every1 that comes up to you, but make their job easier and be more receptive... its for your own benefit! REMEMBER that at this stage, your goal is not to find Mr. Right or whatever you are looking for... the goal is to work on yourself, become the person you will want to be and overcome your insecurities.
I would actually suggest you try my advice and, some other night, try on a more sexier seductive look and see the difference on the type of ppl, the way they will approach you, etc.
Im gonna stop here... its now my turn to go get my sexy on

... its friday night!!! New York New York... here i come!!!!