Advice: white Cake Make-up is transparent and therefore never completely covers up. If you want to have a covering effect (for example with a zebra or a clown), then you need to apply a layer of white Water Make-up (Pure) on top of the Cake Make-up.
If you do not want the colours to mix, be sure to wait for the first layer to dry before applying another colour over it or up against it.
Hint: Regularly change the water you rinse your brushes in and preferably work with two water bowls: one for light and one for dark shades.