Stage 2... I start to shape the petals using cool and warm colours. White is never just white paint. A white petal can be made of dozens of colours. I have used very cool pale blues for the lightest parts of the flower and warmer tones of pale purples for the shadows, but there are also creams, greens and yellows in there too. This is the stage where I'm most likely to panic! So often a painting looks ugly just before it all starts to come together.