Hello! I am in many ways not surprised that I found this forum post. For the last year I have been somewhat pondering this same or similar scenario with an artwork asset myself. The difference is I will be making an actual level not just a virtual or illusion as if you’re in the painting. One difference is tthe artifact I am targeting is a large wall mural. This post does give me some insight although I am currently working on acquiring permission to the use of the artwork asset.