Suggestions Artwork difficulty

Hi Everyone, I have a customer with artwork that needs to go on a sign and I would like some advice on the best method. The artwork was provided by the customer via a business card which she created online but not sure where...the problem is it's an "eclipse" and it fades to black. The sign needs to be 30"x30" with the background being black. The eclipse artwork is a square jpeg with the eclipse in the middle and I've cropped it so it's a square. When I put this square jpeg on the black background, it looks fine. The remainder of the art I reproduced from her business card. Should I send this entire 30"x30" square to get printed and laminated? How is the color black going to hold up? The sign will be on the side of a building in the alley facing the East...it won't get a lot of sun. Someone had suggested to me that I print the eclipse and then layer the remainder vinyl on top of a black acrylic board...that seems like trouble with the printed area fading quicker than the black substrate.I haven't done any mostly black printed signs so any insight is welcome. Artwork attached with fake names. Thank you!