In one sentence, describe what the following article is about:

Wedding invitations are typically broken up into three different parts: the save-the-date, the wedding invitation, and the RSVP card. Decide if you want all of these to be included in your invitation-making process, and how similar or different you would like each part to appear.  The save-the-date typically includes an announcement of engagement and marriage, the names of the couple, and the date and (optional) time of the wedding. You don't have to include the location or any other details. The wedding invitation should be sent out at least six weeks before the wedding date. These should include all of the information for the wedding including the names of the couple, the location, date, and time. Feel free to include more than just the basic information on your invitation. The RSVP card is a smaller card that is sent with the invitation. This is an optional, but helpful, inclusion to your invitation. It comes with an envelope and gives the recipient of the invitation the ability to tell you if they are coming, the number of guests, and their preferred dish for the dinner. The recipient will mail this back to you, so you know how many people your wedding needs to be prepared for. Before you can make your invitations, you need to know how many you will have to create. To do this, make a guest list organized by family or household. Include the full name, address, and optionally their email and phone number.  It is easiest to organize all this information into a spreadsheet on your computer. This way, you can quickly pull up the information and make any necessary changes. As guests RSVP, highlight or mark their names on the guest list. This will help you to keep track of who all is going, and who you have not heard from. Pay attention to anyone on your guest list who may have special invitation needs. If they live in a rural or remote area, you may need to send them an invitation online as well through the mail. If they speak another language, have a special translated version of your invitation made. Once you've decided what parts of the invitation you want to make, make a sample (or a few) for each part. Choose the exact wording you want to appear on your invitation, including the order of different sets of information and spacing on the invitation.  Decide if you want to use formal or informal wording. Classic formal introductions include “[couple's name here] request your presence at their wedding ceremony on...” or  “The [insert surname of the grooms' parents here] family humbly invites you to the wedding of [insert couple's name here] on...”  If you want a more informal wedding invitation, try an introduction like “[couple's name here] happily invites you to their wedding on...” or simply “You're invited!” with the included location and date/time. Although this is just the sample text, make sure that you proofread to avoid any spelling or grammatical errors in the invitations. Don't feel limited to making one version of the information that will be on your invitation, but make several versions testing different styles of writing. Feel free to include directions on the wedding invitation, especially if the location is remote or unknown to most of the guests.

Summary:
Organize the sections. Make a guest list. Write all your invitation information.