Placing posters in high-traffic areas, but avoiding cluttered walls, will help people notice your posters. If the wall is cluttered with other items, the poster may blend in and go unnoticed. The same goes for the wall color the poster is displayed on – a green poster on white wall is more noticeable than a white poster on a white wall. It also helps to move posters from one area to another, so people see them in different surroundings.