I've seen people recently posting in threads that haven't gotten fresh replies, in some cases there haven't been replies in about 1-2 years. In the map section it should be allowed since the downloads are still good, but elsewhere this is really distracting.
Here's a quick example for you, since you're hand-drawing your map.
This is for a sort of gulley/canyon with a big river in it, but it should apply the same.
See around the edges, how there's black, then shades of gray, going up to white? The white's always going to be the highest point on your map while black will always be the lowest. Build up shades of gray between them to get a nice mountainy effect.