One of the oldest forms of negotiation is that of the tongue. It is truly a wonder how a kiss can denote the status of relations without a single word even being uttered. Assuredly I say to you, that when you have learned to master this art of negotiation you will likely have the entire world before you.
You shall learn the simple basics of a proper kiss.
If you are a gentleman, I would say that the safest positioning of your hands should be to gracefully lift her chin upward toward you. Or you could hold your hand vertically and softly across her cheek and kiss her that way. This is a gentle gesture. It is elegant, graceful, technique of a sophisticated gentleman. This works well for a first kiss because of its romantic intent. It shall swoon her when she thinks about it afterwards. A gentleman can also firmly grab her by her waist. This will not arouse her romantic imagination. Instead, the grab of the lower waist is more of an aggressive, confident, and sexual way to kiss. It will do far more to arouse her loins than heart. Both techniques work well depending on intent. As for ladies, you can place your hands over his shoulders. But a first kiss will likely be with your hands around his lower waist.
Begin your kiss by kissing the upper and bottom lip separately. In your mind think of it as alternating back and forth (or at random) kissing the upper lips and the bottom lips. Kiss firmly and do not open your lips too big. Luscious, tight, firm kisses are in order. A lady will see that you are not a slobbery hound. That you at least know what you are doing.
Tongue is only recommended for the advanced. At times imagine the tongue is a Popsicle and you have it around your mouth. Softly suck the tongue up and down.