11.
When the caps get firm, dust them. Work gradually. Rub the excess of the dust off the brush against a paper towel.
I used a mix of rose, white and brown dusts for the pink ones and a mix of purple, blue and white for the purple ones. First I dusted them all the way around going from the bottom edge upwards. Then I dusted the larger indentations. To make the blue areas on the purple mushrooms I applied some blue dust here and there (tapping with the brush).