I want you to really make this a colorful watercolor and pay close attention to the reflections in the water and the movement across the surface of the water. This feature is created by linear brush marks that dance across the surface, with some pieces of texture but very little roughness. If there is too much roughness there will not be any reflections. Just hint at the people the are a blob of color for the heads, a broad side of the brush mark for the torso and just some small little downward marks for the legs. Keep the figures simple and yet believable. Try to express the figure at about 6 heads high and their bodies about 3 heads wide. Have fun.