These are the 'in progress' photos I promised. As you can see, I start out by simply washing in color. I allow that to dry and then start building up the values and adding additional color. I do this primarily by adding stronger washes. Next I break out my liner brush and start picking out the shapes I want to bring forward--those are highlighted. I then go back and reinforce shadows where necessary. I'm using a lot of light blue as my highlight color for the nest. I just like the way it plays off the pink flowers.