That's kind! I ran out of proper blinds pop rivets and used the cheap ones. It's on and I think it will be waterproof. Hope so as I'll be sleeping under is in a couple of weeks time...
I thought that looked perfect for camping, canvas is doesn't sweat like modern tents. Exmoor trim advise periodically using Fabsil and It's satisfying watching the water bead off it.
I bought from undercover covers. It's a superb product. Good heavy canvas, clearly heavily treated with decent wax. I need to soak it a few times, apparently, before it's fully ready.