How to make the picture unified and integrated when sketching gouache?

You need to observe the overall color orientation of all objects, for example, a little yellow or a little blue. Teachers may deliberately put objects with the same color gamut into a group in order to reduce the difficulty when placing still life. At the same time, when laying large color blocks, cook as much as possible. Each big color block contains the same color, so that you have me and I have you, and there are differences at the same time.