Following one of the tutorials here. Here's my first attempt at creating a relatively 3d map with Gimp. I think it's pretty decent for a first try, but I'll be playing with it and other maps quite a bit before I feel comfortable with a finished one.

I haven't placed any cities or roads as that part is still widely speculative and under construction. But this is the northwestern corner of one of my world's continents.

Any suggestions are welcome.

EDIT - Any suggestions on how to fix my horrible looking forests would be great!