It's holiday time, so spend longer than normal gawping at this video from many years ago.
I love Bob Ross programmes. They are my go-to stress reliever - watching a scene gradually appear in front of my eyes is relaxing and fun. There's a bit of me convinced that I could do just as good a job thanks to his tuition too.
Practically, I'm sure those techniques for creating skies would work just as well on model railway backscenes. Maybe I'll try it one day. In the meantime, there are more pictures to watch being painted. Many, many more...