I painted 4 hours in the afternoon and 3 hours in the evening and have still not finished the leaves.
The leaves are now being painted with opaque paints with a fair amount of white mixed in. I am using opaque paints because I need that opacity to paint on the dark green backgrounds.
After I painted the green background on the trees, I had to put my fabric and printed cartoon on a light table and retrace the lines for the leaves. I used a mechanical pencil that Bohin makes with white lead.