Thanks for sharing. Always good to stretch and be creative--that's the difference between an artists and a craftsperson. I like the first one a lot....the second, not so much.
Here's my thinking (for what it's worth): when you do a long exposure like this, you're emphasizing motion. So the motion should be something that is tells a story. The first photo, everyone would look at that and go "oh, grass being blown in the wind" and they may even fill in the gaps...seashore in winter, cold wind blowing in off the ocean, gray sky, deserted beach, etc....none of which are in the photo but your art suggests those elements to viewers. That makes it a powerful and successful photo.
When I looked at the second photo (b/c of the motion) my first reaction was that you set a long exposure of a stationary object and then you unintentionally jiggled the camera. The movement pattern isn't as flowing, it's much more chaotic or appear to have a consistent pattern. I'm guessing it is a tree?