Wow, what a nice message you left, thank you so much. To help push you into 'going big or go home'...Beloved was one of my earliest projects and I back you 100%. I had a basic tutorial to follow so that helped a lot. I watch the Beloved Build thread constantly so if you ever run into any difficulties you can just ask in the thread.
You don't have to sand mm and that's the beauty of it. Just the way it is leaves the most realistic stone look to fabric. Then you coat it with Drylok to even it up and give it even more of a stone look.