I did make a couple of minor mistakes. For no good reason, I decided to use screws to attach the cosmetic strip at the top and, no surprise, the screws split the thin strip of wood. I will eventually replace the strip and this time use finishing nails, as any halfway competent carpenter would do. I also painted the stringers brown initially and didn’t like the result, so I redid them in white. But no screwups on the things that mattered.
Got ’em done just in time, too – the electrician is arriving today.
I now have an entrance “alley” that I think looks pretty attractive.