The second step is also a quick one. Use the Fewer - More Colors
control to set up the overall level of color detail (solid color areas)
in the image.
When the slider is moved to the right, the number of solid color
increases and when the slider is moved to the left, the number of areas
decreases. The two images below were obtained using different Fewer -
More Colors settings.
These two images have different number of color areas, but exactly
same outlines, shown below.
topic - Step