The water looks awesome! Really great. I think you can tell that the leaves on the hill are planes b/c of the shadow underneath
the water looks great, especially the foam in the water fall. the rock that is just right of center looks likes it's glowing underneath though
it could use more in the way of water vegetation (i.e. cats-tails/bull rushes) and darken up the grass a bit for contrast, other than that it's awesome
Nice work! The scene really conveys a strong park-like ambience with the lighting and composition. Now that you have the foilage and leaf textures in the scene, dupe them as ground cover to add more lushness to the scene. Hide all seams and lines where polys meet. Make the rocks look more varied - scale some smaller and maybe intersect two or three of them. Add grass around the rocks...things like that. The foreground leaves over the grass look too flat - dupe and rotate some to face the camera - that will create a more natural look. An area light added to the camera facing side of the bridge would make the bridge stand out more. Or you could change the angle of the sun to come from the right side - them the shadows would fall across the scene horizontally and catch the bridge in the light.