I'd say 3 and 6 are your best shots, although I think they could be enhanced with a little bit of editing. 1, 2, and 5 are honestly just snapshots; nothing really interesting. 4 is okay, just not very interesting to me, however is a good example of a leading line, draws me into the image.
In 3, the subject is placed in one of the intersecting lines of the rule of thirds, good composition! Although, I think a tighter crop on your subject would be more appealing.
6 has an awesome perspective! I like how you got the people down below to give some scale to the image. If you were really serious, you could use a circular polarizer to cut out the reflection in the water, not that big of a deal though. Overall, your best shot out of the bunch!
Keep at it!
Thanks nmasters for the c&c. 3 and 6 are actually my favorite ones from the batch. I tried to do some post edit work to make the greens stick out more because they came out a bit dull and liked what I got. Still playing around with other images to see what I can do.