The key to kissing is to keep it simple, sweety.  Physical intimacy is best to be kept instinctual as opposed to outlined and calculated.  However, I will offer some basic ideas.  A nice first kiss is to start off small with a couple of soft, short lip kisses and build up to a longer deeper tongue kiss.  This kind of kiss is a subtle metaphor to the concept that you are building trust and intimacy.  Also, I suggest you start to let your tongue wander to other parts of the body.  The neck, the ear-lobes, and the nipples can all prove to be highly erogenous areas of the body.  Every partner will vary in his preference, but it is up to you to figure out what turns him on.  If kissing him in a particular spot continually provokes him to back away and giggle, then you've probably hit his funny bone and missed his erogenous zone.  But that should not discourage you from trying something else.

Most importantly, be natural.  Sex is an art, not a sport, although some athleticism may be required.  There is nothing more enticing than a mate who is comfortable with his sexuality, so just let it flow. 

-Zaida