I’m the scenic charge for American Players Theatre, one of our spaces is an outdoor space and we’re a company willing to play through the rain. My question: One of my designers has designed a banner for a show. Likely constructed out of muslin. This has to be waterproof beause it will absolutely get rained on, likely multiple times over several months. Does anyone have a recommended procedure for how to do this? I can also get the banner printed, we’ve done this before, but I’m interested in painting it if possible.