Here is a group painting of a grandfather with grandchildren huddled around him. What gives this painting strength is the arrangement of persons. They are in a circle, grandpa furthest away, two children further towards us, and one little girl closest of all. There is a feeling of depth. Also notice the angle from the person on the left to the little girl on the right. The group of people make a shape while the drapery creates an opposite one on top.
Note the highlights in the hair with small hints of color. The skin isn’t just one shade. There are highlights and shadows on the faces. The closest child and the two persons furthest to the left lean toward the center where Grandpa is pointing at something.