I was really fortunate today. Lisa, whose daughter has been sick, was able to join me! It turns out I couldn't have done it without her. It was a much tougher job than I anticipated (a theme as you know). The technique seems simple enough on paper, but the sponge rollers require a really light touch. We found it looked better with a dry roller right behind the wet one, to better blend the colors. Thus it took two people to really do this well.