I like your composition with the waterway, but the fence just seems odd and out of place, incidental. It's hanging there, not doing anything, which hurts the strength of the waterway. This is sorta magnified a bit by the nature of the fence- it's angular, and hard edged, while the rest of the scene is more organic, with curves and softness.
An interesting aspect of this photo is that the sky, though much larger, doesn't really steal the show... it feels about equal in strength to the foliage/waterway. |