Firefly Inspired Build Help Needed

[starfighter66]

I recently purchased a vintage Mechanical Japanese Pachinko Machine that needs a new playfield graphic and I thought a Firefly inspired one would be awesome instead of a reproduction. Unfortunately I really suck at graphics. the measurement of the field is 21" in length and 15 1/2 in width and the center piece is 3" in diameter with a similar sized graphic at its back.Is there anyone out there that can help?