Are you going to have songs playing? I would try 'Skin - by Rihanna'. There's bound to be some songs out there you'll like.
It may help to create an alter ego for something like this. xD
Practice on your own, feel the music (by this, I mean.. Go with the tempo)
Go slow, take your clothes (or your lingerie off very slowly...) Piece by piece.. Wear a necklace or gloves? You can try to incorporate that in the dance.
The lap dance isn't just limited too, on his lap..
Smile, give him a sultry look.. Feel yourself.. (Don't stay in one place for too long or move around too much where you're making him dizzy)
Roll your hips, move to the music, grind your ass on him real gently, don't let him touch you (well, maybe once).. It's all about you touching him, teasing him.. Get real close to him. Then, you whisper something 'dirty' in his ear.. As do, just hovering your fingers above his skin.
Play with the distance between you and him for a bit.. Let him touch you somewhere for a good 5 seconds (a deep touch, you know?) then move away.
You can always get him up after you're done with giving him a lap dance and unzip his pants.. Go in for the dive. Tell him to give your sugar walls some lovin'.