with a paper towel or clean the area with a damp cloth. dab the area with powdered sugar to take away the excess shine.
you could also wait for the paint to dry and then paint a new design over the previous one.
when using a lot of different colors, the more brushes you have, the quicker you will be able to paint — you won’t have to wash and dry the brushes between paint stages.
to get a natural look, try to use two or more shades of one color. also, decide where the light or sun would fall on your design and paint those areas a lighter shade of color. then, 