I understand that, I was just pointing you in the direction of something to work with. You could modify it and make it your own.
There are plenty of people who could help you with your custom art. You just have to be prepared to pay for the work to be done. How about some high res digital artwork instead?
You could post a mock-up of what you'd like done, then if someone feels they can do the work, typically they'll let you know and you can negotiate a price.