Even if you show the correct relative sizes the distances are still a problem. Think about it, if Jupiter was this close to Earth it wouldn't look like a dot in the night's sky but would be rather overwhelming -- so it must be really far away, which makes drawing it to scale rather a challenge. If you want the length of a piece of paper to represent the distance from Mercury to Pluto, then giant Jupiter would be the size of a dust mite on that page, and Pluto a bacterium.