Plan ahead, order early. It's good to start early when choosing wedding invitations. You and your partner will need time to research and discuss the various choices available for your invitations. If you look early enough, you may even have time to request samples from various companies. Ordering your wedding invitations at least 6 months in advance will give you a cushion of time to allow for printing of the invitations and correction of any errors that may occur in printing. You also need to account for the time it takes to assemble your invitations and mailing them out to give sufficient time for a response. Plan on ordering 20 to 25 extra invitations in case they are needed because of mistakes in addressing the invitations or if you find you need to add additional guests to the list.
Choose invitations that actually look inviting. Thick, high quality paper with bright colors or a unique design that makes the envelope stand out from other mail that may arrive on the same day. Your invitations should excite interest even before they are opened, and if you have chosen your design well, they should evoke reminders of the happy couple as well!