I designed all the artwork and the entire invite using Adobe Illustrator. My wonderful Fiancé wrote the little story we had inside, and the amazing team at Proof 7 printed them. More importantly they dealt with my psycho picky-ness over every tiny detail. They were wonderful to work with!
John and I spent a few nights putting them all together (which was more work then we will ever admit!) Regardless of how time consuming this project was, I have to say it was worth it. I loved the end result! My wedding favors will be the next DIY project I can share...but you'll have to wait a month for that one :)
UPDATE: If you are interested in this invitation it is now available for customization in my Etsy shop! :)