I have given a lot of thought about this project. Every other day, it rains and washes away the chalk artwork outside so I have decided to stay away from this option. I am doing a perspective drawing on paper.
It is meant to be "trippy" basically. You look at it and it seems like it is 3d or moving and not really on flat paper. These two images below are just starter ideas for it. I do not want to copy someone else's work like the "Impossible staircases" but I want the same type of idea. I want people to look at my art and see different parts of it popping out to create an illusion effect. The way it really comes into perspective is that it looks different every way you view the art. You are constantly changing your view to "solve" the illusion but it is really just about the right placement and slantedness of lines/objects. It is a work in progress.