Looks extremely good and honestly very very nice, only critique eventually to me is that the north seems a bit faded by contrast with the sea I think...
If you want to add another I think sometime ago I found a climatic simulator that was easy and crude and not up to the complexities of the others but...
Zbrush , 3dsmax, photoshop , and too many two tell here .
for mapping I use wilbur , Fractal terrains , world machine 2, photoshop , terragen 2, gimp , geocontrol 2, oscape, tesannwyn,etc...