I’ve found a couple of short Udemy courses on making wallpaper-type images. This is approximately one of them, but made in Blender rather than Cinema4D which the tutor used. Good to pick up a couple of techniques, mostly using the Curve modifier in this case.
I’m trying to create illustration type images rather than realistic environments, and also I want to start simple and build up my ideas and complexity gradually. This one was pretty easy I must admit.
And here’s another, a very popular style of abstract with flowing blue thingies.