I recently took another look at the Spooner's Cove No. 02 picture I created last year and decided to make some changes to it. I wanted to add some more detail while keeping the abstract theme and retaining the flat colors.
I didn't want to add texture to the colors like I have been doing by brushing over colors with the “Old Oil” brush using the same color which creates slightly darker and lighter streaks then filling it with a darker shade of the color. See the picture below for an example.