step one: brainstorm with the mural advisory group
Form a Mural Advisory Group that can decide on the theme of the mural. This group should be small, 2-4 people, because too many cooks in the kitchen can result in a very contentious mural-planning process, or a mural that tries to encompass too many ideas. At a school, people in this group can be the principal, interested teachers, and a member of the PTA. In a community setting, this can be highly involved community members and representatives from local businesses, organizations and religious centers. The mural advisory group will meet and discuss the theme for the mural, and any stylistic preferences they might have.