I may have to take a look at that tutorial sometime; I don't use those programs but I've been slaving over a terrain map for the past week, doing a lot of the relief shading by hand and a bit with photoshop's bump mapping/lighting effects. It's been an instructive week, and it looks fairly convincing when I zoom out past 25% (which is about print-scale) but I'd like it to look nice at 100% for digital viewing. Either I don't know enough about photoshop and its various uses (very likely) or I need a different program (also very likely) haha =)

That higher res image makes it a lot easier to read everything. And I haven't studied river deltas very much so don't read too much into my opinion on that point. Just to repeat myself, because it hits me every time I look at them... the coloring on your maps is lovely. (edit: okay, so I didn't exactly repeat myself, but I should have said it the first time