Drawing a cartoon for a game box

Drawing a cartoon for a game box. The drawing must be on a square with a minimum size of 30cm X 30cm. I'm attaching a test image just to give you some indications. Don't consider the proportion of the figures. Color drawing. In the center a title and under it a subtitle (payoff) . On the left the figure of a rich businessman with a smiling grin. Always on the left below him companies that pollute. On the right, the figures of some serious and concerned scientists. Below them vision of trees, cultivated fields and cows on the fields. The image must be drawn by the author, not copied. Therefore it must be free of any copyright including that of the author to guarantee us any use of the image without limitation.The output format must be vector. It must be opened with the Gimp software