Yes, the first thing I noticed was the horizon. I understand that leveling it makes the trees lean even more to the left, but your second version looks much better anyway.
I like the second version, too. Most places I've been, trees tend to bend in the direction that prevailing winds push them. I've seen very few trees that actually stand straight up, so I can more easily accept the tilted trees in the second version than the 'apparently' tilted waterline in the first.