The brown rat stands confidently on its hind legs, looking at the viewer with its beady eyes. Its long tail curls around its feet, adding a sense of balance to the composition. The creature is quite ordinary, but its pose and thoughtful expression could be interpreted in many interesting ways. To bring some dynamism to the picture, try introducing bright pops of color and interesting textures. You might want the rat to look wise, so use strong blues or indigos to give its eyes a sense of depth and power. You could also make its fur shine by using a variety of browns and purples.