POSTAGE and Quantities: The number one tip you need when it comes to sending out your invites, is that your guest list number does not equal the number of invites your sending. Do the math on how many couples you have ahead of time, and you won't make the common mistake of ordering about double the invites you need.
Buying/Finding A Design: If you don't have design experience, and you're not fond of pushing images and text around on pages (aka, does the idea of designing a flyer for a Bake Sale or some other event excite you, or does it make you hide under your desk?), you're going to need to find someone to design your DIY wedding invitations for you. Fear not! Thanks to the Internet (and Etsy, bless), there are tons of places to get an invitation design. Some are even our sponsors! Here's a short list of places to check out.