Kaleidoscope Ruler lets you create lace patterns and shapes easily.
From ①the Ruler tool, select ②Kaleidoscope Ruler.
Drag the slider for ③the Division left and right to determine the number of divisions.
Drag ④the Phase slider left and right to change the angle.
Spend a little time making a fancy shape, and you will get an exquisite lace pattern.
Finished. This time, I turned the Alpha Lock on, to add gradation to the lace pattern, and added a drop shadow using a filter.