Here were my first attempts:
So, after very much frustration and very many headaches, I decided to look again at the picture of the stitch--several times-- to no avail.
At last, after much struggle and torment, I caught sight of text below the image and thought "Oh, what could this be?"
Note to self: It's a good idea to read the instructions
Though still not perfect, I've managed to wrangle the little devils into better-ish shape:
It turns out that I was making the knot at the top of the loose buttonhole and working down when I should've been making it at the bottom-middle-ish of the buttonhole and working up.
Oh, btw, the way I've been practices stitches is with a piece of canvas. What you do, is you essentially sew the edges into the canvas and work the stitches over the top. I like canvas because of the open weave which makes it easy to measure the distance between stitches --> which is good if you're semi anal-retentive like me.