Shrek stands tall and proud in a field, surrounded by his faithful animal companions, a cute little cat and a brave donkey. His large green body is crossed by muscular arms, which are folded in a conquering stance. On his face there is a big, confident smile, conveying his satisfaction with the scene. To bring out the texture of his skin, try to use shades of green that vary from light to dark. Shade the folding of his arms and the shape of his muscles with mid tones and dark shades of green. For the cat and donkey, use a warm colour palette that combines yellows and browns to express their furry coats. A brighter shade of yellow can be used to colour the cat's eyes, while a lighter aquamarine colour can be used to accentuate the donkey's eyes. Finally, complete the scene with some light blue shades to represent the sky and some purple and yellows for the flowers around the field.