I think it goes without saying that your lips should be as soft and supple as possible. Avoid tons of lipstick (most men don't like it), unless you think Bozo the Clown is a good look. Fresh breath is also a necessity. If it is a concern, be sure to have some mints handy. If you want to freshen your partner's breath, take a mint for you and say, "I just want to be fresh," then playfully feed it back and forth while in the kissing warm-up mode. Make it playful. That way, the breath issue isn't about him.
The next time you and your partner are kissing, while kissing his lower lip, suck as much of it as you can gently into your mouth. While holding it there with a little suction, stroke with the firm point of your tongue in an up and down motion from the edge of his lip down to the crease of his chin. According to Chinese medicine, that meridian is associated with the genitals, and for some men it feels like a mini shock wave to their groin
Gently suck on his tongue as prelude of what's to come. Believe me, as you are doing this, he is likely thinking of the same being done farther south. To show him and see for yourself how it will feel for him, treat your middle and index fingers as you would his tongue and suck on them, treating them to the same sensations you will give his tongue. And remember to have your tongue in motion so that it isn't just hanging out in there. Try side-to-side strokes or flat circular moves (this motion is against the fingerprint part of your finger).