This beautiful image features two stunning flowers, lilies and marigolds. The lilies have long, slender petals that curve inward and are often shades of white or yellow. Meanwhile, the marigolds have shorter, rounder petals that are a vibrant orange or gold. To highlight the contrast between the two flowers, I'd suggest using bold and vivid colors on the marigolds, such as yellow and pink for the marigold petals and softer hues for the center of the flower. For the lilies, combine white or yellow petals with a center of light purple or lilac. Then, to really make the flowers pop, try using a wider palette of colors on the background. Consider blues, purples, and greens to tie in the colors of the flowers while maintaining contrast.