The highlights are blown out as noted. What ND filter did you use and what are the exposure parameters? I would agree that the exposures were a little too long. I would also watch your cropping. You have cropped off the bend in the first image - not a good compositional move. As waiting says, the falls themselves look like a great thing to photograph, you just have to work on the technical aspects a bit.
WesternGuy
The cropping was basically none, I shot these with a 35mm 1.8. The ND filter I got dropped things 9 stops (hoya ND400), I shot at f22 for soaking in all detail at about 15-20 second exposures. A couple were also stacked on a CPL.
#3 was on a zoom lens, no cpl, just swapped the ND filter over. A 55-200 DX that I got off a member here. First time I actually got to use it. . . in all honesty, it was the first time I got to really get out and shoot in a long while. . . long story.
Thanks for taking the time to comment! I want to play around with this filter because I am heading down off on a cruise from Puerto Rico and want to get some shots that are different from my other travels. I like the idea of a daytime long exposure. . . I dunno, we'll see what happens. I know these were a little hot, but I think I can dial that in a bit. I should have thought more about my timing too, but, I was honestly just so glad to be out and about.
While I know they aren't technically perfect, I still am pleased and like the direction I can go with having this lil filter in the quiver. I hope for some fast moving clouds, some subtle surf, and getting some decent shots on vacation. I think I ma go down to Georgetown tomorrow and fiddle around some more, and try to get a better feel for settings.
On another note, today was a really calm day on the falls. A kayaker died a couple of weeks ago, but just for scope/scale, this is the same location when the river is running high. . .and this, is still low based on the high water marks. . .