I created this brush to use for leaves in watercolor style illustrations. It is best to use for mid or background trees.
It uses the spray setting with three different brush tip images to create some variety in the leaves. They are somewhat transparent and have a watercolor edge. The color can be changed as well as the spray settings.
I've adjusted the settings or used a different technique on each branch of the tree to demonstrate different results that can be achieved. Personally I love the look on the right which was done by layering several light strokes.