Thanks for all these comments (in case anyone ever comes back to see this photo!). It looked better when I uploaded it... 5 minutes before the deadline. A good lesson--be fully awake when you submit. :)
nice vantage point, but it seems like you got a lot of technical problems with this photo. Focus is not quite sharp and there is a lot of light diffusion bluring out the tree. Perhaps a different framing and at sunset would be nicer.
This is a bit blurry, but the composition is very effective, and the image is well balanced. Your highlights on the water may be a bit too bright, too. Nice time of day captured here!