The Lark's Head Picot Join looks just like a double stitch (on the front side). There are several tutorials for how to do it online, but the ones I found all showed how to do it from the front side of the tatting. I simply reversed those instructions to tat it from the back side.
Note: double stitches are in reverse order when tatting back side (2nd half first, 1st half second).
Note: double stitches are in reverse order when tatting back side (2nd half first, 1st half second).