You can't always rely on your good looks, friendly nature, or a witty pick-up line to draw people into you.  Stats vary, but the majority of experts are on the same page that it takes between a minute and 5 minutes to decide if we are attracted to someone.  Body language accounts for 55% of the impression we get from someone. 

Most encounters between couples are triggered by signals that two people send each other, consciously or not.   Here are 3 ways you can improve your signaling powers to reel in people you are attracted to:

1) Employ the "Eyebrow Flash"

When you see someone who you are attracted to, use the "Eyebrow Flash" to your advantage.  Raise your eyebrows briefly (for half-a-second), along with your eyelids, to make your eyes more open and to dilate your pupils.  When catching his / her eye, try to hold his / her gaze for 1 - 3 seconds.  Then, look downward (not away or to the side) before your glance at him or her again.  By looking away or to the side you will make him or her think you looked back unintentionally or are surveying the territory.  Looking downwards and back up is a subconscious way of playing peek-a-book, given that you eyes will be hiding for a brief second, before appearing when you glance back up to him or her.  

2) Work you body

Keep your head up and assume a straight posture, shoulders slightly back.  It will help make you look more confident and relaxed.  Keep your lips moist with your tongue or lip balm to make you look more kissable.  Wear clothes that are form fitting, but not too tight.  Clothes that suggest you have a decent body will do far more good for you than clothes that looked painted on and leave little for imagination.  Wear nice shoes because anyone interested in you is likely to scan you from the ground up, starting with you guessed it, your shoes! 

3) Let 'em know you're seriously interested      

Research shows that most singles need at least three instances of eye contact before they can muster up the courage to approach you.  Don't forget that he or she can be just as nervous as you are, so any signals you can send him / her to confirm your glance will be warmly welcomed.  Try triangulating, which is basically going from one eye to the other, down to the mouth, and then back up to the eyes in a triangular movement.  When you triangulate, you are saying an unmistakeable invitation to others to approach you.  Also, keep your body open by resisting the urge to fold / cross your arms.