First impressions may be made in moments, but they predict the course your relationships follow. So if you know what exactly about you draws in the votes, you can perfect it -- and do better with the opposite sex. So what do women notice immediately?

According to Dr Gordon Patzer, author of Looks: Why They Matter More Than You Ever Imagined, and one of the world's leading authorities on physical attractiveness, a lot of what women notice in the first few minutes is appearance-based. "A substantial portion of the six features of a man are apparent, in terms of height, weight and overall physical attractiveness," he says. And when appearances don't make the cut, the door slams shut on further interactions. Here's a list of things to keep that door open.

1. Physical stature

Yep, you knew this already: size matters. Height and weight are right on top of the list of things women notice. "Too much or too little of either immediately classifies the man as unattractive to women, and closes the door before less physically obviously features (such as confidence) can be determined," says Dr Patzer. Take heart though, the acceptable range is influenced by the woman's own height and weight.

2. Appearances and attractiveness

Yes, beauty is skin deep, but it's going to get women to explore what lies beneath. Attractiveness does include what you were born with, but your genes alone can't scuttle your chances. What really counts is what you do with your hair, clothes, grooming and basic hygiene. If you can't make the effort, women certainly are not going to work hard to learn more about you!

3. Smile

Once women are done assessing your overall build, women will look at your smile. "The ability to smile, particularly within the first few minutes of meeting, sends a welcoming, non-hostile signal to women," says Dr Patzer. There is one proviso though -- the smile must show off reasonably good-looking teeth. It's never too late to fix an appointment with the dentist!

4. Humour

Another reason to show off those pearly whites! Women like men who have the ability to laugh. Even better, make the woman laugh. That instantly nets you bonus points!

5. Confidence

Women find confident men attractive. According to Dr Sameer Malhotra, head of psychiatry and psychotherapy department at Fortis Hospital in New Delhi, within the first few minutes of meeting, women will not only suss out your level of confidence, they will also interpret the vibes you give out and how you think. "Women notice how clear or decisive you are and whether you approach things positively." Just remember, cockiness and arrogance are not the same as confidence!

6. Conversation

Men have successfully given womankind the impression of being strong and silent. So women aren't expecting you to have mad talking skills. All you've got to do hold her attention. "We know (scientifically) that the more or longer that a woman gets to know a man, the more physically attractive he becomes in her mind," says Dr Patzer. Women are looking for someone to keep up the conversation -- so forget the one-liners, just be you!