Taking a look at existing examples.

Trying various shapes and layouts. Adding the city coat of arms.

The art director likes the chosen direction. Starting the search for the manufacturer. Visiting companies and exploring their production capabilities. Finding a company that can cut metal in any shape and engrave anything on it.

Simultaneously testing ideas on real-life objects, trying to choose the best size for the text. Deciding that the rhombus-shaped sign looks best.

Receiving a production sample and trying to mount it. Realizing that in real life all objects are different and a single format will not work. Looking at the signs in real life.

Replacing the coat of arms with the city logo.

Tidying up the layout, choosing a different typeface, announcing.