I like mine to be fairly sloppy. I don't mind a little slobber. One girl that I went out with had a big problem with slobber. I had to be very careful or she'd get pissy.
Biting can be very exciting. Just lightly use your teeth and bite the other person's lower lip, and pull back slowly and let the lip slide through your teeth. Also bite their neck, earlobes, etc. Obviously not strongly enough to draw blood or leave bruises -- just playful, light bites.
But most of all it's the excitedness of the people involved. (This is talking about non-"peck" kisses, like hello or goodbye kisses. I"m talking about passionate kisses here.) Even if the other person is a "bad" kisser in one way or another, there's something really great about her being really excited about kissing you, and showing it by being really active in the kissing. Grabbing your hair, pulling your face down to hers, pressing her body completely into you, hands forcefully pressed against your back. Esp. if it keeps going on that way for hours.
And it's even better when it's like this bipolar thing, with stages of heat and then tenderness. One minute you're hot and heavy, the next you're looking each other in the eyes, lips barely touching, just looking at each other and knowing that you both have so much love for each other. Until she grabs your hair again and starts the passion again. Back and forth and back and forth....
Teasing is great too. You shouldn't continually give a guy what he wants.
Oh, one really cool thing to do (it's not really related to good kissing) is to seal your lips completely with the other person's, then one person starts inhaling through the mouth, drawing air out of the other person's lungs (and maybe through their nose as well). You can keep doing this for at least a few times back and forth. It's really strange to have the air forcibly extricated from your lungs. It's a cool feeling. Heheh it would freak my ex out when I did that, I would kind of sneakily do it every once in a while
