Hello everyone!

I'm having some trouble with Wilbur making rivers. I'm using the Incise Flow to make my rivers, but when I follow the Arsheesh - Eriond directions, I'm getting the opposite effect?
Here is my problem:
This is the direction given: "here are the settings that I recommend: Amount 2; Flow Exponent 6.5; Effect Blend 2."
Here is the minimum I used just to preview what the flow would look like:
screenshot_850.png

Notice the river on the right side of the "preview" button? When I up the flow exponent to 2, that river gets shorter/shallower:
screenshot_851.png

At setting 4, the rivers are no longer there?
screenshot_852.png

And at the recommended 6.5, my map turns into a bump map:
screenshot_853.png

The tutorial has the example map like this, which is nothing like mine if I do the 6.5:
screenshot_854.png

Now, I can see that I should use the lower settings, but my question is why are the recommended setting making my map a bump map? Should the rivers be more deep, or more prolific with higher settings?

That is all for now. Thank you for any help with this mystery.