Grumpy Rhino Savanna Illustration

Create a simple children’s book style illustration of a single grumpy rhinoceros standing in profile facing left in an African savanna. The rhino should be large and centered, with a rounded gray body, thick legs, two ivory horns on its nose, small pointed ears, a thin tail with a black tuft, white toenails, and a stern angry eye with a frowning mouth. Use bold uneven black outlines and a hand-painted crayon or gouache texture with visible brush strokes. The background is a bright cyan-blue sky with exactly 2 blocky white pixel-like clouds, one in the upper left and one in the upper right. The ground is flat golden-orange dirt with scattered small dark rocks and exactly 6 tufts of dry brown grass, plus a low row of rounded green bushes along the horizon. Keep the composition playful, flat, and graphic, like a preschool picture book animal card, with no text, no watermark, and no extra animals.