Any background is possible for this picture、This slightly abstract background is "vertical"、Let's say。It's difficult to be the best、You can create a stable and better background、In the sense of Oronine ointment。There are almost no limit to the variations。
There are no difficult techniques、For better or worse, it depends on the person's sense。And、It's easy to get into a rut、Infinitely。But、"Rut" isn't necessarily a bad thing。Or rather、Creation can only be found beyond a certain rut、Someone once told me。