The toadstools are getting there. I sponged white acrylic paint onto them first to create a blank canvas and make the colours more vibrant.
I then painted the colours of the tops. I still need to add detail to the tops (e.g. painting the dots) and I also need to paint the stalks.
I find painting the toadstools very therapeutic until there is a patch which just refuses to be painted for no apparent reason. That happened a couple of times, but I persisted until it cooperated.