I have drawn a graph of the stitch here for you on graph paper. The way it works is that your bring your needle up at 1, 3, 5 and the other odd numbers and take your needle down at 2, 4, 6 and the other even numbers. So, up at 1, down at 2, up at 3, and so on.
I have also done a series of photos showing it down with needle and thread and these follow here:
So, there is the completed stitch! You can see from the photo where to come up to start the next stitch. And, lastly, here is a photo of a row of these stitches worked together.