Round 3 should read: “* (2 dc) on dc, 1 ch, 1 dc in lp, 1 ch ; Repeat from to * 9 times more; join with sl st in first st.” (It was missing the second “1 ch” in the repeat.)

You have to omit round 8 for the pattern to work.

This doily cups quite a bit, but flattens with proper blocking.

For the final row, I added a picot between the 2 TCs.