Yuck. Some of you don't know how to kiss.
The trick to french kissing is to feel the dynamic of the kiss. First of all, your partner may suck - if its your first kiss you won't have anyway of knowing. Here's a few guidelines. If she/he is domineering, that is, forcibly moving his or her tongue about.... they suck. If he or she is keeping his or her tongue like a dead fish waiting for you to slap it with yours....they suck. The beauty of a french kiss is the give and take of the tongue movement. Once you are good you may be able to guide the other person to move in different directions, or even be able to softly bite on it or his or her lip as a measure of some raunchiness. But the trick is to let yourself go. Don't think AT ALL. The less you think, the more your natural sexuality comes out and the "better" you seem, well, because, you aren't trying to screw it up by analyzing it.