1.Consider ordering formal note cards with your married name or monogram on them. These cost about $150 and up for 50 cards, depending on the quality of paper and number of details you include. Order these notes at the same time that you order your invitations.
2.You can also opt for preprinted thank-you notes from a card or stationery store. These are much less expensive, and there are lots of styles to choose from. Expect to pay $5 to $10 for eight cards.
3.Be sure to purchase plenty of extra cards. You may receive more gifts than you expected
4.Handwrite each note.
5.Mention each gift and tell the giver how you will use the item, if possible.
6.Refer to any special effort the person went to for you, such as traveling a long distance to attend the wedding or giving a special toas
7.Consider adding a line telling invited guests who were unable to attend the wedding how sorry you were that they couldn't be there with you.
8.Send separate notes for shower and wedding gifts. Even if you received two gifts from the same person within a short period of time, each one deserves its own acknowledgment.
9.Be timely. According to etiquette guru Amy Vanderbilt, a thank-you note should be written within two to three weeks of receiving a gift - six to eight weeks at the very most.
eHow Contributing Writer