Having failed miserably with the "kits" out there for making my own decals, I began the search for a professional concern that would be able to replicate a tail flash and other markings.
To say the market is not flush with custom decal companies is an understatement. Having approached two likely "vendors", I found that the charges for "set up", "art work" and "minimum order" exceeded the cost of the model I was building , which topped $100 itself. It sat there, collecting dust, unfinished.
While perusing another one of my hobby's forums, I ran across a webpage that produces and sells stickers and decals for military helmets. Lo and behold, he offered CUSTOM decals and dry transfers. After a couple of emails and sent pics, I got exactly what I had been looking for for a tenth of previously quoted prices. Super nice guy, doing it on his own, very quick service and I am completely satisfied.
So, for those looking for reasonably priced custom decals, here he is:
http://www.military-steel-helmets-and-decals.com/German%20helmet%20decals.htm
Rick