Whitewater

The problem with waterfalls is that they can become just a slab of white in the frame, so I'm not sure I wouldn't have opted for a faster shutter speed here and a different style of water. However, you have handled your choice very well. The waterfall is a bit central, usually having the subject off-centre gives a better balance.

This is where the "rule of thirds" comes in. It does work, but any off-centre is often better than central placement.

I like the way you have managed to control the white without it becoming burnt out.