This is an Alder railing I did for a client at work. This was something new for me because of the double curved railings. Each riser and tread was different and the angle the risers met the skirt was different. It took a while but eventually I was able to get everything to fit together nicely. The niche in the wall next to the stairs was a prefab unit. just cut a hole in the wall the size of the back, glue it in and paint it.