Here you are looking at the right side of your work. The last row worked was a row of single crochet. Normally, you would place a single crochet under the horizontal 2 bars.
Make sure that your hook goes through the 2 vertical bars on the wrong side of your work as well.
If you place your hook through these 2 vertical bars both in the front and back of your work, it will result in a completely reversible stitch that looks very similar to a knit stockinette stitch.
I love this stitch. I have used it as the trim on my Textured Cowl and I have plans to use it again in a hat pattern. Can't wait!
Would love to hear if you have tried this stitch yourself and what projects you created with it. Or if this is your first time trying it, I would love to hear what you think or if you have any questions! Have fun playing with your yarn and hook!!