I do like your photo. The more I look at it the more I see.
I use a 10x loup and the sparkles and glints that I see in
bright light are a dead give away that I am not yet done.
I might add that a hair will slide along on dull bits too thin to
see without magnification. Not a hanging hair test but
just slide the hair down touching it here then there.. it will slightly
catch on a good edge and slide on a dull edge. Cat whiskers
are great for this. The goal is to not cut the hair but to test
the edge.
Years ago I picked up a tester for kitchen knives made from
a hard plastic. Same trick slightly different scale.