You have some strong compositions here and your exposure is very good as well.
A couple suggestions I have would be,
-mind your edges, dont just look at the subject, look at everything in the frame and decide if its helping the subject or distracting from it. (ill use the bottom picture as my example, the tree in the top left and also in the bottom left pull your eye away from the subject.
-try crouching down low or getting a higher vantage point rather then just shooting from standing position (#8 for example)
-pay attention to the position of the horizon and try to make it divide the frame in thirds whenever possible.
Nice work Keep it up!
Looks like a beautiful holiday!
JC