I decided to try adding shaded mountains to my map, with... varying results. Some of them disappeared entirely while others ended up looking too prominent, and some like an absolute mess, so there's still much work to be done. I added the biggest rivers here with names, but had to take out all the tributaries and smaller rivers I had already drawn. If I want to go into more detail and add all the important rivers + tributaries on the map, I will have to switch to a larger scale, and I think that may require the use of a vector grapics program.
This is admittedly one of those work in progress maps that will end up in scraps eventually, but I'm hoping maybe showing this while the worst wrinkles are yet to be ironed out may spark some feedback to help me at making it better.