How to shoot a before-and-after pair the forum can learn from

This forum is the showcase wall, and a good pair of photos here teaches more than a page of description. The recipe: same angle, same distance, same light if you can manage it; the before photo shows the fail the way an inspector found it, the after shows the same spot fixed, verified, and clean. Add three lines of text — what the deficiency was, what the fix actually was, and how long it took — and crop out anything that identifies a resident or an address, per the forum rules. Repairs of every size belong here; a latched fire door pair is as welcome as a full bathroom. Who is posting the first pair? — Otto Mergl, Admin