a local sign maker should be able to help. I had one make me a stencil so I could have an authentic hand painted sign. Then a couple years later the signs were damaged and I found a real sign painter that hand painted my door signs.
When I die, I hope she doesn't sell everything for what I told her I paid for it!
Check and Support your local business. They can design anything you come up with! Here is our truck. The Goat on the door the shop made from an actual picture of our Grand Champion Doe. Then our daughter painted it on the doors. The print shop made a reversal decal and then we painted the Logo. It was fun. Good luck. Let us know how it turns out. Todd