Hi,
About that curtain, I do canvas work on the side after regular work hours. I work for 10 bucks an hour plus materials. I am not sure were you are but if you shipped it to me I could copy it to fit the other side as long as the snaps are spaced the same from side to side, or just make a pattern of the snap spacing. I re sew cover tops and make them just started have done 5 covers and a pair of seats. If you would like I can send pics of them, bur side curtains are pretty straightforward.
Mark
