Now that is a much better image.
Including that bright bit of foliage at the top of the waterfall, while cropping out the foreground, makes all the difference.
The viewer's eye usually wants to 'find' the brightest parts of an image (or at least the areas of greatest contrast)...so by having the bright area at the top, you give us a destination / starting point. My eye follows the waterfall up to the top...but because it's a waterfall, it's only natural that I follow it down again....but the bright trail of water leads me up again...and back down. To me, one of the keys to a really successful image, is that you can have the viewer's eye traveling over the image, without it jumping out or without it getting stagnated in a bad spot.
So while this image still doesn't have that 'wow' factor that jumps out at you...I find that I can look at it for a decent length of time, my eye moving around it, picking up all sorts of different details as I go. That makes for a great photo IMO.
This is a great example of finding the photo within the photo. The first version wasn't anything special, IMO, but you managed to tweak it and make it really work. This should be a lesson for all. The only downside is that you've had to crop it so much that a lot of the resolution has been lost, which will hurt if you want to make a print. With practice, you can learn to find the photo within the scene and crop by zooming or getting closer, allowing you to get it right in-camera.