This, my third attempt, is going where I want it to go:
First Stitch every front side row: With yarn in front, slip first stitch as if to purl, then move yarn to the back;
First Stitch every back side row: With yarn in back, sip first stitch as if to purl, then move yarn to front.
This will form form a slipped stitch border that will be used later on.
Cast on 7. (I used Emily Ocker’s circular cast on, but you may cast on any way you wish, as long as you have a readily-identified center stitch at the top, as it will be used later on)
Row 1: Sl 1, K6
Row 2: Sl1, P6
Row 3: Sl 1, YO, K1, YO, K1, YO, K1, YO, K1, YO, K1, YO, K1.
Row 4: Sl 1, P12
Row 5: Sl 1, Knit across
Row 6: Sl 1, Purl Across
Row 7: Sl 1, K1, YO, *K1, [K1, YO, K1 in next stitch] , repeat from * to end, ending with K1, YO, K2.
Row 8: Sl 1, Purl Across
Rows 5-8 form the ever-increasing pattern; the red-marked K1 will increase by 2 with each pattern repeat row, since you are adding 2 new stitches into each section each time (so it will become K3, K5, K7, etc. with each new repeat), or adding 10 new stitches every 4th row.
You can continue in like manner until the shawl is as long as you wish, and then just call it done at that point. My shawl will be adding a shawl collar treatment along the top border. But that is something to be added later. For now, however, I’m going to beginning adding some color. 🙂 And because I am working with a plain stockinette field, I may also include some eyelets or other features for added interest. But mostly this is intended to be a heavy-weight solid warm-keeping winter wrap more than a fashion statement.