Here's the sketch--looks simple enough, right?
Here's the card I came up with, using the Traveler stamp set.
I'm not sure I nailed it, but the elements of the sketch are there. I was tempted to do some sponging to make it a bit more vintage-y, but I left it clean and simple. I used the Stylish Stripes Embossing Folder to fill in some of the empty space so that the background is not so empty.
