I’ve been busy.
I’m embarrassed to admit that I should have known how to make a straight teardrop stitch, all along. I think I saw it somewhere, described as the “arrow” stitch (so that’s what I’m calling it).
It’s just a simple stitch alternated with a backward stroke simple stitch (B/ay, B/(-a)y, B/ay, …).
Along the way I uncovered a straighter but still tilted stitch that I’m calling the “lambda” stitch.
In my notation, this one is: B/cy(m)\F/(2a)y\, where you hold the yarn in front of the work during the second stroke to create the bar at the top of the capital lambda.
I don’t currently see much use for this stitch, but I’ve recorded it in the Stitch Gallery anyway.
I also uncovered a cool third stitch that’s becoming another headband. I’ll be posting on that when I’m done.
And I’ve tried to make the Stitch Notation page clearer.