We have
made another colour by adding a small amount of blue to the previous
colour because we want to create a great contrast around the pistil
and consequently give volume. Give a few stokes to the right hand
side of the outside part of the flower.
Continue
giving depth with the grey tones, or even mix the grey with ochre
or blue. See how I have modelled the lines from the pistil upwards,
creating a rounded shape.