Well, while flowing water has been done a million times before, I, for one, still want to get MY photo of flowing water with the softened effect, and I haven't, and I guess this might have applied to Kris as well before he took this one. And now he has his own photo of a water fall with flowing water, and was happy about his own result, to only hear others call it dull.
So here he is, with HIS (first? one and only?) photo of flowing water, wanting to know what he did wrong.
OK, it may be "wrong" to photograph a motif that has been photographed lots of times before.
But that is not the question, not for Kris, I am sure it is not.
It's rather: what to do to make a photo of this kind, i.e. HIS photo of this kind, better.
And I kind of feel that the answer given by mmphoto isn't too wrong after all: this very photo, THE flowing-water-photo-by-Kris, is too tightly cropped, apart from the fact that the water might look a bit murky, too.
So my advice for future photos of this kind (boring to others, Kris, they have seen it a million times before, but interesting for YOU and your learning curve, I am sure!) would be to include some more surroundings, to give this flowing water some more context. And then, given you make use of digital photography (?), test out your speeds and apertures and play a little, that, too, helps learning. Also play with points of view ... I think you are on the way. At least you have got further into your own flowing-water-photography than I have with mine..!