Well, in the rough, tough game of game of women, one thing can be true. The zero game but one big zero that is going to make it really hard for you to score is if you are in any way ashamed of sex or your sexuality. That is because women have been taught on a lot of levels to be ashamed of sex also. They are not rewarded for acting sexually in public for example. Think of what happens when they even dress too revealing. They get labeled as sluts and get scorned by older women, peers and even a lot of men.
In some extreme cases, women are taught by their parents that their genitals are some how "dirty", etc. In other words a taboo subject or something not to be seen or talked about. There are many other examples you can probably think of. It is rare that you meet a truly liberated woman who is totally free of any kind of residual shame about sex, or at least negative consequences of acting like she is not ashamed of it. What this means is that often you as a man will have to be the balancing force in the equation, the one that is very comfortable with the idea of how awesome and natural sex is. You have to be the one who will "take the blame" for taking about it, starting it,etc. The more repressed she might be, the more positive you have to balance the equation. The problem though is that somehow modern culture is telling a lot of guys to turn off their sexuality in order to act like a "nice guy".
Many guys who was under this mistaken assumption that if they acted like they didn't want sex outside of marriage or a really committed relationship then they would make themself look nice enough for her to want to date. Even though sex is what you want in the end, you're ashamed to admit it to her for fear she would think that was all you wanted or that you're a pervert. The truth is, if you act ashamed of sex in any way, then it will be extremely hard for things to get sexual with you and the average woman. For the rare females who really do want sex, they will get bored and find a guy who does want it. The ones who are ashamed will just go along with your frame or have it much later than you both might really want.
What instead needs to happen is that you have to in effect "take responsibility" for any of the shame of sex. It means that your actions and the things you say have to communicate to her things like this. "It is not your fault if you and I end up making love". "You are not a slut for having slept with me". "Other people don't have to know about this, nobody else will think any less of you". "I know that you don't do this with other guys and what we are doing is new for you". "I really enjoy being with you sexually, I hope you do too".
Talking to her, you would not say these things exactly, but the deeper message would be the same. You basically have to relieve her of any guilt she might feel and let her know there will be nothing bad that comes from it. Lets look at a verbal example, while you are making out with her, she might tell you "we shouldn't be doing this". In that case, you can assure her that you know she's "a good girl" and the blame is shifted off her shoulders. What about an example that shows you like sex through your actions? Here's an example. Let's say you are flipping through the pages of a magazine and sexy images appear of men and women, possibly nude, and she's around and saw it too. If you keep going and act like it was never there, you are acting ashamed of sex. You get a ZERO!
The point here really is to focus on the fact that sex is natural. The human body can be seen in this manner as well. Women are not going to jump into bed with you just becuase it is but if they see that you see it as such and they begin to feel comfortable that way then things will change. They will find it not so taboo a subject, there's nothing "dirty" about it or their bodies, they're not going to listen to mummy's old folks advice and sex is nothing to be ashmed of. No more zeros after that lesson!
Bar advice. If you add up all the points here and you come up with zero. The games over for you. Than again you could just restart from zero, upwards.