So, here's that "one more step" I mentioned above ^...
I picked up a bronze Rustoleum spray and sprayed the badge, not a heavy coat, but enough to cover. I have two badges, one that didn't transfer as well and is not as detailed. I used that for my first attempt at revealing the image.
Pretty steamy in the BACK40 , so I moved into the AC confines of my upstairs office. Better light too.
I first used dry 1000 grit wet/dry paper. And rapidly with a light touch sanded off the image.
It definitely came out shiny, with a nice contrast, but I wore away some of the image that was there. Remember, this is aluminum, and very soft.
On the Helen Wheels badge, I used a wet 1000 grit paper (both times covering the end of the eraser equipped pencil, and took more time. I also lightly brushed the background more, to blend the two together.
Satisfied with the result, I used a J&B Kwik Weld and covered the back of the badge, then tied and clamped it on the head tube overnight.
These are the shots I just took this morning.