Shell-like pattern modified

The original pattern was supposed to be leaf-related, but I wanted to test it to see whether I could make it more shell-like. I still can't get it to line up the way I want, which is frustrating, but maybe I need to let it set for a while and come back to it with a fresh brain ;)

Shown with a cast-on count of 28 stitches.   Getting chart...

  • Rows 1, 5, and 9 (RS): Sl1 wyib, k1, *sl2-k1-p2sso, [p1, k1] 3 times, yo, k1, yo, p2, repeat from * to last 2 sts, sl1 wyib, k1.
  • Rows 2, 6, and 10: Sl1 wyif, p1, *k2, p3, [p1, k1] 3 times, p1, repeat from * to last 2 sts, sl1 wyif, p1.
  • Rows 3 and 7: Sl1 wyib, k1, *sl2-k1-p2sso, [k1, p1] 3 times, yo, k1, yo, p2, repeat from * to last 2 sts, sl1 wyib, k1.
  • Rows 4 and 8: Sl1 wyif, p1, *k2, p3, [k1, p1] 3 times, p1, repeat from * to last 2 sts, sl1 wyif, p1.
  • Rows 11, 15, and 19: Sl1 wyib, k1, *k1, yo, [p1, k1] 3 times, sl2-k1-p2sso, p2, yo, repeat from * to last 2 sts, sl1 wyib, k1.
  • Rows 12, 16, and 20: Sl1 wyif, p1, *p1, k2, p1, [p1, k1] 3 times, p2, repeat from * to last 2 sts, sl1 wyif, p1.
  • Rows 13 and 17: Sl1 wyib, k1, *k1, yo, [k1, p1] 3 times, sl2-k1-p2sso, p2, yo, repeat from * to last 2 sts, sl1 wyib, k1.
  • Rows 14 and 18: Sl1 wyif, p1, *p1, k2, p1, [k1, p1] 3 times, p2, repeat from * to last 2 sts, sl1 wyif, p1.