Summarize:

Since one night stands are almost exclusively physical in nature, you’ll want to make yourself as alluring as possible. Shower and groom yourself meticulously. Pick out a clean, good looking outfit that accentuates your best features. Spritz on a little fragrance. Above all, project confidence. The more assured you appear, the more desirable you’ll be. Devote a little extra time to cleaning up your intimate areas if you think sex might be on the table. When you find a suitable partner, make an effort to learn her name and find out a bit about her. This will give you just enough insight into who you’re with to make your temporary connection memorable. Put her at ease by treating her like a person with a mind of her own, not just a sexual object. It’s one thing to have a fun fling, but no one wants to feel like they’re being used.  Don’t rush things. It only makes you look desperate. No one wants to get together with someone who’s just looking for an easy score. Pay attention to see if she's returning your interest. Coy eye contact, smiling, raised eyebrows and a willingness to flirt in an overtly sexual manner are all good signs. If she purses or licks her lips, touches her hair or body suggestively or emphasizes her erogenous parts to make sure you notice them, it's almost certainly a sure bet.  There’s no time limit for setting up a one night stand. Spend as long as you want getting to know your prospective partner. Make conversation, take her out to dinner, go for drinks. Ideally, you should both be excited by everything that comes before sex, too. As soon as the possibility of physical intimacy gets brought up, be direct with her about your desires. Don’t lie to her, misrepresent your feelings or string her along in order to get what you want. A one night stand should be a consensual experience for both people. You’re both mature, responsible adults and are capable of deciding whether you can live with a one-off hookup.  When it comes time to make your move, do it in a way that isn’t forceful. Say something like “I think you’re really attractive and I’d like to make you feel good for a night, if you’re interested.” If she’s hopeful about seeing you again in the future, she might feel pressured to do something she otherwise wouldn’t do. Always come prepared. If you’re a guy, stash a couple condoms in your wallet so you won’t be caught without a contraceptive. If you’re a girl, think about whether you’d feel comfortable bringing a dental dam along. It’s also best to be upfront about any sexually transmittable infections either of you may have to avoid any unpleasant surprises later.  It’s always better to have protection ready than to deal with unplanned consequences later on. Never withhold knowledge of an STD or illness. Your partner’s health matters. Since you've never been together before, you should be open to communicating with one another about your individual desires, hangups and level of comfort. Find out whether a given technique, position or behavior is okay with her before trying or asking for it. Respect her boundaries and be careful about making her feel pressured or judged, and be clear about what is and isn't alright for you in return. As long as you're on the same page, a night of casual intimacy can be a lot of fun for both of you.  A one night stand can be a great place to act out your most torrid fantasies without worrying about making things weird, but everyone has their limits. Remember that the two of you are essentially working together to satisfy each other, and, unless it's explicitly agreed upon beforehand, no one person should be in complete control.  You should have your partner's consent every step of the way. Whether the pressure comes before or after you're in bed together, it's still wrong.
Look your best. Show an interest in her. Make your intentions clear. Bring protection. Make sure your partner is comfortable during the act.