Hi Casenote and welcome to the guild. As far as I know there is isn't an easy method to erosion and river making....it's lots of small incremental steps. I've got FT Pro and Wilbur and I'm still struggling with trying to replicate some of the great maps here with superb rivers. You've got the two best tutorials I've found (and the Israh tutorial gives you a lot of others to look at). No one button press silver bullet I'm afraid (at least that I know of).