Hi,
no actual work has been done in the last few days on this project,
but some research and looking for suitable material.
I found two etched brass sheets that have a pattern on the one side.
Exactly as I need for this loco in front.

One is 0.3 mm thick and the other is 0.5 mm thick.
The 0.3 looks finer and I will use that.
Photo one the two sheets.
Photo two the part of the loco that has to be removed complete with the
old cast on imitation lamps.