I paint the brightest highlights of the leaves, trunk, sand, water, and clouds at the very end of the painting so that these elements seem to shimmer in the tropical sunlight. I finish the painting by applying a glaze over the entire surface to unify the painting and adjust some of the colors. My goals are to deepen the top of the blue sky, tone down the red of the upper branches, and deepen the foreground shadows. So I prepare a glaze with a hint of ultramarine blue added to alkyd resin medium (a medium that speeds up the drying time of oil paints) and apply it to the upper areas and the foreground with a small brush. Then I coat the entire painting with a clear glaze of medium, rubbing away the excess with a flannel rag.