Pen Tool Project:


Repeat this process adding separate closed shapes and filling them with colors as you go controlling the transparency of the shape fills as you go. Color your image in with separate shapes until you can fade out the background image entirely and have just the colored shapes remain that you have created

REMEMBER: if you have trouble selecting a shape that overlaps another shape, you can go briefly to the View>Outline mode to see just the bounding boxes which you can easily select by clicking on even if they are behind another shape entirely