NUM, the eastern hemisphere
This is the eastern continent of NUM, which is the setting for my Gervasa game. I was really only interested in the area in the upper left hand corner, but I figured if I was doing it, I may as well do the whole hemisphere.
This took about a week to do, all told. I primarily used techniques described by Ascension is his excellent continent and atlas tutorials, as well as some tips from Revell. I did the ocean differently, because I did not care for the result I got using Ascension's techniques. I am not thrilled with the result I got using my techniques, either (a combination of layer masks, layer filters, filters, lighting effects, and so on), but at some point I had to decide it was as good as it was going to get (I am also not happy with the neon-glow reefs, but have not yet found a technique for edging the continents that I like better).
I did put a river or two on most of the continents, although I am not sure you can see them since this image is 1280x1280, which is 10% of the size of the original (12800x12800, 1 pixel:1 mile), and the rivers were only 1 to 2 pixels wide. I did not put in any volcanoes, since at full 1 pixel:1 mile scale they would only be two or three pixels wide, at most (and that would be a truly epic volcano).
This map is not labeled: I will put labels on the flattened version. I will post a follow-up when I do.
I guess those are all of my thoughts, at the moment. If you have a question about how I did something, I will try to answer, although to be honest I mostly followed the three tutorials I mentioned above.