Well the whirlpool should actually be a storm
But I am not satisfied with this one either. I will rework it in my next update.
I looked through most of the tutorial in last few days, but I seem to have missed the one about the forests.
Maybe I should learn to use the search function ...

The rivers really get lost somehow, but its just in the .jpg. They are much more visible in the .psd-file.
I will try to export the next map in a higher quality. Maybe that solves the problem.

Thanks for the kind words and suggestions