In this scene, the cowboy stands confidently with a gun by his holster and a determined look in his eyes. The accompanying costume of details such as his brown cowboy hat, red-and-white shirt, blue scarf, brown belt with silver buckle, yellow bandanna, and brown cowboy boots bring this picture to life. For a really dynamic image, you could use blues and yellows to bring out the cowboy's individual items of clothing. Making the brown of the hat and holster a darker brown or black—with the silver buckle of the belt highlighting those darker shades—will add detail and visual interest. Contrast the bright blues and reds with the dark browns, maybe with pops of yellow in certain areas, to really bring the picture to life.