Last week scored a green canvas chore coat off ebay and decided to wax it. After making my own wax I got to it. Rubbed it in with a rag at first, but switched to spreading it on with a plastic card, hit it with a heat gun to melt it into the fibers, and that was that. It is very water resistant, but not quite water proof.
Maybe another layer of wax is in order or some of the spray on waterproofing to keep me dry through Seattle’s wet winter.