Thank you for the link on rivers! That should help tremendously!

I think I'm going to change the texture to something less folded and ripped, and then add a frame around it. That should make it look neater, hopefully. As for the mountains, hills, and trees, I used brushes for them and then painted over them with colour. I didn't think it would be so much work colouring each one individually, but it is. Perhaps in the future, I'll use pre-created objects as well...

And aaah, I didn't know that about roads! THANK YOU. I'll change the roads immediately!