Before: an 8.5' x 50' mural, maybe 30 years old. The paint was peeling and faded, and the client had an ownership change. It's clear, it's time for a change. Before photo:

After carefully scraping and wire-brushing the old paint. The entire sign area was then washed with a TSP solution and painted with three coats of white for the background.

A photo during the process - shade painted first, then the lettering.

After photo: