I bought a license plate bracket from Simspeed, and to mount it to my bike I had to create a custom brace for it. I think it turned out well.
All I did was bent a piece of metal into an S shape, drill a few holes and it was done. I just have to paint it next.
The white ties will be coming off, and replaced with something else. I just put them on to hold the light cable so I could take the bike out for a joy ride. The temperature got up to about 55 degrees yesterday.
The Simspeed bracket came with the brake light that also has a clear section to let light shine on the plate.