Are there any unknowns that you need to clarify? Use your storyboards to find potential problems before they occur, saving time and energy.
Look at contrast – how does one area affect the adjacent areas? Pump up the contrast to “sell” the story behind the area. If it’s supposed to be a dark area, have it follow a light and cheery area.
Is your storyboard too big? Make it smaller. Work in color and shape, don’t get mired in detail.