Have no expectations. If you go into a given conversation with expectations about how it will end (getting a date or even her phone number, for example), you'll risk coming off as desperate or forcing the conversation. Relax. Take a deep breath. Enjoy the conversation for what it is, and the woman you're talking to will be more likely to respond positively.
As a general rule, women are more approachable and less suspicious when they meet guys through the course of a regular day and in an atmosphere when they feel at ease, as opposed to when a guy introduces himself in a more typical setting (bars or clubs, for example). For a lot of women, anything with a meat-market vibe is not ideal for meetin men, and if you go through this list motivated only by a slavering desire for sex, women will detect that insincerity, and you'll fool exactly nobody. Don't look at these as pickup strategies; just think of them as generally positive habits that happen to have an added benefit.
AskMen Recommends: If you're looking for sex rather than a relationship, you might want to choose FriendFinder-X over Zoosk or Match. FF-X is a hookup site that focuses on your desires in the bedroom rather than everything else. In terms of features, you can message other users, sure, -- but you can also live-broadcast, for instance, while the "What's Hot" section highlights the top-rated pictures, profiles and videos on the site.
Be open-minded to all those interested in you. If you put an age-range or any other restrictive ranges into your wishlist, you could miss out on women who might be slightly outside those expectations but are ideal for you. It also sounds really bossy and perfectionist to list restrictive preferences and will scare off many women even if they fall within your restrictions.