This is somewhat pertinent to my original topic.
Here's the helm I'm making to which I had intended to add a crest. I'm still leaning towards the Teutonic "wings" just because I like how they look, but I'm not sure yet; they would probably take a little bit of engineering ingenuity. The original piece that the helm is based on has holes along the top that were supposedly for mounting a crest, so if I poke holes in it, I suppose it would still be "correct" should I decide to remove the crest to use the helm with a different kit.
Or, I might just leave it as is, in which case it wouldn't be relevant to the original topic at all.