@JillsJoy there is no plan, it's pretty random
I know some people plan out gallery wall placement in advance, make paper templates, & carefully measure everything
I just add one picture at a time, try to keep straight lines level, & try to avoid any long unbroken gaps
It actually feels a bit too much this morning! My bed is at one end of this space and the view first thing this morning was ... busy?
I normally prefer my sleeping space to feel more peaceful