Neat, I've made a very shoddy example of how I think it could be done with what I had on my nearest USB.
(Does it look too much like something a psychopath would do with magazine clippings?? haha)
I'll try to send a message about it on discord and we can better figure out if it would be a possible thing to organize. We could pass a psd around and people could add stuff? Or maybe a png if people don't have photoshop. If we want it to be a town made up of iconic spots maybe it's a good idea to pre-plan where things go?