The next row tightened up the doily so that it didn't ruffle as much, but I can't see where to do from here. I know I had in mind to do something with a row of motifs on the outside or combined rows to give that kind of effect but it doesn't want to flow and I'm tired of fighting with it.
Part of the problem is that I'm running out of size 20 white and a bunch more rows will take a bunch more thread. I think at this point I'd rather use the white to make some snowflakes so I called it done and cut the thread.
After blocking it into submission this is what I ended up with, a doily only 9 inches across but just a smidgen too big to fit on the scanner.