Here’s a photo of what I made:
And here is the thread that it is from.
There used to be a “gallery” on this forum that had the pictures for the first post in it; at some point it went away, so I skipped to the 4th page on the thread that has the photo’s. It might be worth reading the whole thread because other riders came up with other ways of implementing this that may be better. I never had a problem with it but I like the brake booster that someone used to reinforce the brake.