Those have to be the best decals I have seen! Sure hope you can find a maker for them and I wish you good luck.
I don't recall exactly , but I think forum member AMCDave may have done a tutorial on how he makes decals. If not a tutorial I believe he described the process pretty well. I son'e remember the thread or exactly when I read it though, sorry. I will look around and if I find it I will add a link for you here. I really know nothing about the decal end of things.
Here's one link, but not the one I was looking for. Custom Decals (John C)
Sorry, but I can't find any of AMCDave's how to's on decals. Maybe he will see this thread and offer you some advice.