The trees add depth to the scene so I would keep them...
Play around with the fog... set it's min higher and make it more transparent if you can...

It looks good but it can look better with just a little tweaking. I like the idea :D

Good luck!

P.S. Also try and raise the camera a bit but still point it in the same general direction of the ripple... so you can see the water and the reflection better.

P.S. II
Just had a better look. Move the moon a bit to the right so the hand choking the other hand is visible cause now it's right on the edge and you can't see much if you don't know it's there.

Sorry, that fog is really crappy. I'll have a new one with better fog tonight, it could possibly be my final render. I was using the wrong lights on the fog, so it turned out a blackish color.

Ok, hope it turns out sweet.

Good luck!

Here's a better render. Is the fog too bright?

i like the fog where it is color and brightness wise...the only problem is it makes the tree hared to see...i'd say look at making that slightly lighter before i would mess with darkening the fog...either that or sihlouette the tree more with the moon...so that the tree appears entirelt black against the moon...