The first picture needs more constrast. Might want to crop off the space above her head too. Wish the dogs paws weren't cut off. I like that you got down to the dogs level for the shot.
The second picture is okay...feels peaceful.
The third picture is a nice motion shot, but slightly OOF (camera shake? vibration from the train?)
The fourth picture has potential, but the horizon line is crooked. I'd crop off the oil rigs on the right. Maybe bring the right edge closer to the sun and make it a square image.