A doily in 29 rounds using 2 skeins of Daisy Art 65 size 20 and US steel hook size 11 measures 16” diameter.

A doily in 29 rounds features
wagon wheel center
tr fans
chain in chain

A special technique of ch 18 with 12 sc in one loop only starting at 6th ch from end. On the following round, the 2 are crossed into an “X” around the center disk.

picots
filet edge
shell with picot