It is fun to place a variety of photos and art work on a stair way wall.......

I would paint the wall too! Nice ad bright!!

Thanks all for your ideas and suggestions. We do plan on waterproofing :) I’m in Perth and the area gets probably about 6-7 hours of full morning sun and then part sun in the afternoon. The Murraya peniculata looks nice, does it have a nice smell? Could I put a smaller plant or hedge in front of it? And how often does it need to be watered? Another idea was to put star jasmine on a trellis and a smaller box hedge in front. Or those plants that look like a hedge ball (if that makes sense haha). Thanks again :)

This may help. But a screen like you have posted with real plants may be better. The plants can be in hanging or floor pots. https://www.verticalgardensdirect.com.au/products/artificial-green-tropics-vertical-garden-1m-x-1m-uv-stabilised-plastic-plant-screen-panel?variant=25074596488&utm_medium=cpc&utm_source=google&utm_campaign=Google Shopping&gclid=EAIaIQobChMI8KantpLw5gIVwRErCh3j8wIbEAQYBSABEgIfnvD_BwE