Learning and performaing a sexy striptease for your husband is a wonderful way to turn him on. It can make you feel sexy too and lead to some hot sex in your marriage. The Marriage Bed has an article written by a man as a how to for wives to strip that might be a good place for you to start. For more specific instructions, iVillage has two articles: Pull Off a Striptease Like a Pro: 11 Tips and 7 Lap Dance Moves That Make Men Melt.
Also, to really get the moves down there are some instructional DVD's: Camen Electra's Aerobic Striptease and The Art of Erotic Dancing: Lapdancing
But realistically, it isn't that hard to come up with a sexy routine on your own. I suggest the first thing you do is pick a song.
Different songs can set different moods, but remember this is for him not you. You need to pick something that you feel comfortable with and can move to some and that makes you feel sexy. For me, it's really about playing a part or acting. I mentally put myself into "character." Some songs I like are "Call me" by blondie and "Naughty Girl" by Beyonce.
Once you have your song choice in place, you can pick your costume. You want something sexy here but not too hard to get out of with some grace. The article from The Marriage Bed above says he prefers panties to thongs, but my guess is he's in the minority among husbands out there on that.
A lot of layers can be good. Not of clothes, but your lingerie. You can layer a chemise over a teddy over a bra and thong, etc. . .
Sometimes you can dress up very elegant in a dress with stockings and high-heels or sometimes go grunge with cutoff jeans and a tank top.
Once the costume is set you can work on your moves. It doesn't take much here, just remember the point is to not just let, but encourage him to look. A good example is Jamie Lee Curtis's striptease in True Lies. And don't forget the TEASE in striptease. Give him a nice long look and your behind or your chest. Start to slide your thong off but not far enough for him to see anything. Unhook your bra but don't take it off. Remove your bra but keep your breasts covered with your hands. Switch back and forth from facing him to facing away. Move in close but don't let him touch. Tie him down if you have to!
For the extra score, show him how turned you are by touching yourself, guys can't resist that.
Once the song is finished, the rest is up to you!