Summarize this article in one sentence.
Make sure that you move in with one, calm motion. Move too fast and you risk startling her; move too slow and you may seem too passive. If she's given you permission to make the move, she'll most likely reciprocate your advance and kiss you back. Continue touching her if you were already making contact before the kiss. Continue holding her hand or touching her arm or shoulder. Be gentle. Make sure that if you're touching her, you're only applying light pressure. Being too forceful or holding her too firmly might make her uncomfortable, or show that you're moving too fast. The first time you kiss a girl, you won't want to go overboard or turn her off. Make sure that the kiss doesn't last too long, and that you aren't too aggressive with your tongue. Your kiss should be calm and confident, and not too fast. If you come on too strong, she may think that you're desperate or too forward. The kiss should only last a few seconds. There will be plenty more time to continue kissing, especially if you ask her if she wants to continue. If she pulls away first, don't lean into her and try to prolong a kiss. Keep your hands on her waist, arm or hands. Don't let your hands wander to places that she may be uncomfortable having you touch. Just because she's agreed to kiss doesn't mean that she is ready to go any further. If she starts to touch you in return, and you feel that she's interested in doing more, break off the kiss and ask her. She'll be glad that you respect her feelings, and she'll be able to tell you if there's anything she wants to do next. If you stay in control of the kiss and break it off first, you'll show her that you're confident and in control, and that you're not moving too quickly. She may go back in for another kiss or tell you that she wants you to kiss her again: if so, go for it. When the kiss ends, ask her if she's okay, or ask how she's feeling. The moment after a kiss can be a bit awkward, but asking if she's alright will give you an idea of what she's thinking about or feeling. If she says that she's alright, and is happy, you've done a good job with your first kiss. Try not to make things awkward by getting flustered or asking for more physical contact. Stay relaxed, continue talking, or let her go for the night if you've walked her home. If she says she's not alright, don't be upset. She may not have felt a connection with you, or she may have been uncomfortable with the kiss. She might let you know the reasons that she felt uncomfortable. Listen to what she says, and respect her feelings about the physical contact. If you've done your best to send signals and talk to her throughout the process, she still may or may not reciprocate. Girls sometimes turn down a kiss or cut off a situation for their own reasons. She not be emotionally ready, or she might not be attracted to you. No matter what, always respect her decision. Don't get upset or try to change her mind, as she'll become upset with you.

Summary:
Move in close and kiss her. Don't take the kiss too far. Create more tension by letting go first. Be respectful if she turns you down.