The dogs in the circle each have distinct colors and interesting patterns. The colors range from yellow to black, and many of the dogs have a light patch on one side, while the other is mostly one solid color. Each dog's eyes are shining, as if waiting for something or someone special. To create depth, try shading the dogs differently, starting from light colors around the eyes and gradually darkening towards the back. You could also add some additional colors to each dog, like light blue to their ears and nose, or small patches of different colors on their back. Finally, bring some color to the circle with a bright pink or purple in the center.