I see what you are trying to do in this photograph but something bother's me about it. It is supposed to depict a serene place but it is cluttered and gray. I love the bridge, I love the stones but together they make a cluttered scene.
A truely loveloy composition. I like the balance, symetry and solidity of the stone arch, and how it frames the more natural scene behind it. I like how the rocks tumble at an angle and the ferns peek out under the arch. Perhaps framing it with a touch more room to the left and below you invite the viewer to enter the scene more - moving into the photo from the left ?
The plant life appears to be a very secondary element to this image. Can't decide whether to deduct a point for that or not. I guess many people will have an interpretation issue with this one.