First step: send invitations. It's not eco-friendly to send mail the old-fashioned way (paper, stamp, post office, etc) but it's not so terrible since I'm only mailing a few, right?
I found a wonderful, vintage photo on Pinterest, it's original source is My vintage mending. I hadn't planned on a theme but since finding this photo and knowing what dress I'm going to wear it's turning into a an old fashioned holiday!
I added the details of the invitation simply by using the Paint edit program.
After printing out the invitations on standard white stock paper, I lined the inside of a kraft paper envelope. I also added a label which I wrapped around the outside of the envelope. Both of these goodies I found at Ellinee Journal.