The Sl1 wyif on the uneven rows are in fact German short-row Double Stitches in the centre. The Sl1 wyif on the even rows are the decorative chain selvedge stitch. The tail is on the left at the even (RS) rows. The short-row point is formed from the left. The eyelets [yo, k1] increases are now aligned within the row that absorbs the double stitches. Consider next version: on RS rows, instead of [k2tog] 4 times in row 2, to …
The Sl1 wyif on the uneven rows are in fact German short-row Double Stitches in the centre. The Sl1 wyif on the even rows are the decorative chain selvedge stitch. The tail is on the left at the even (RS) rows. The short-row point is formed from the left. The eyelets [yo, k1] increases are now aligned within the row that absorbs the double stitches. Consider next version: on RS rows, instead of [k2tog] 4 times in row 2, to start each row with Sl1 wyif, k1, k2tog.... (see test 9) I'm knitting it in left-over cotton, white, with needles 3 mm. It bulges a bit on the surface <-- maybe that's because I did 14 points and 12 would have been sufficient?
Shown with a cast-on count of 14 stitches.