A general rule for women is to give the impression of being approachable so that men will feel comfortable in taking a risk whereas men must bring out the magic in showcasing their masculinity in an understated manner.

Tips for Men and Women

• Lock eyes with the person you're flirting with for not more than five seconds, smile and then drop your gaze. Do this at least three times during a 10 or 15-minute period. Your objective is to let the other person know you are interested by establishing eye contact.
  
  
• Smile, it’s your most powerful tool. A friendly, genuine smile makes you more attractive and approachable. So guys, if a woman locks eyes and smiles at you three or more times in an evening, you have been given a clear signal that she's interested.  Make your move before somebody else does.
  
  
• A successful flirting technique of a woman is to expose her neck. A head tilt, the hair flip, or the over-the-shoulder glance attracts men’s attention, exposes your neck, and gives you the opportunity to lock eyes – accidentally!
  
  
• Subconsciously, we groom ourselves when we are attracted to someone – by smoothing down our hair or clothes, checking our lipstick, or straightening our tie. Men should combine their grooming gesture with a smile and a gaze. Women on the other hand have the advantage of a combination of preening and a flash of neck when they toss their hair to one side.
  
  
• Men in general are subconsciously attracted to red, moist lips, and believe it or not, it also increases a man's heart rate. Wearing red lipstick with shiny lip-gloss gives women’s lips a youthful color, a more obvious smile aside from appearing more kissable.
  
  
• A woman crossing and uncrossing her legs, especially if she’s wearing high heels, appears seductive to men. Slipping the heel out of your shoe and dangling it on your toes is another trick. The arch of a foot is a subliminal representation of the curves of a woman's body.
  
  
• Unconsciously, people mimic another person's body language – gestures, voice volume, posture, etc when they are attracted. Therefore, subtly mirror your flirting target's behavior – if she leans forward, lean forward; if he scratches his head, scratch your head.  When you mirror someone's behavior, they'll begin to feel, think and believe as though the two of you are connected. Take care not to ape them completely otherwise they will get offended!
  
  
• Intensify the attraction once you and your flirting target start talking. Remember to smile, maintain eye contact, and focus your attention on what they say. A man who gives his undivided attention to a woman is very attractive. Women should repeatedly use the nod and head tilt techniques. Smiling is very crucial at this point – it puts the other person at ease.