How to select a right painting
To select a painting right for your wall, we have two main options. 1. Painting as contrasting element 2. Painting that matches existing color. If your wall is darker, better select paintings with lighter colors. If it is lighter, select a painting with darks as dominant color scheme. Another option is to choose something that is in perfect harmony with wall color or texture.
Another criteria being size of the wall vis a vis size of the painting. If wall size is huge, better select larger painting and if wall size is small, select small painting.
Next criteria is orientation. If wall has more width and lesser height, then select horizontal painting. If wall width is less in comparison to height, select vertical painting. If wall width and height are same, select square painting.