Even though you now realize a hanging system will greatly facilitate the mechanics of setting up an art wall, and though you know the most powerful tricks to selecting materials for your art display wall, you may feel you still need inspiration for arranging the pieces. Just as Houzz.com, or Pinterest, are great web destinations for collecting home décor ideas, there are many web resources for priming your creative juices for an exciting wall arrangement. Pottery Barn also offers several useful tips and suggestions.
There are any number of web sites that offer templates and designs suggestions. Here are some great ideas for Gallery Walls shown with Room Vignettes. The following image is from Lushome.com.
And this one from JennaBurger includes quite a volume of similar idea builders. Simply perform an image search for wall display templates on your favorite web search tool to see a large number of additional ideas.