This is what I was thinking. If it doesn't appear to be a genuine Fender decal, people will be telling you it's a fake. When you tell them you put the decal on, you will most likely have to have this discussion again. It doesn't seem worth it. You said you don't like the blank headstock look, but do you really need to put a Fender logo on there? Warmoth has some classy looking decals. I am sure you could get a custom decal made, paint or brand something, or just put a cool sticker up there.