Soften your shadows a little, they blend into the objects to much. And move the light a little to move the shadows a little to the left to give some more noticable contrast between the wood and the shadows. Also, nice weathering on the wood, but slightly warp each plank and offset the lengths a little, the edge is too clean for an old table like this. Give both objects a little more reflectivity of their environment, yes they are rusty, but they would still reflect a little. Also, in Cinema, Fillet, or soften all your edges. There are no sharp corners or edges any where in the world. One reason why 3D images can look almost real, but fall short, because their edges are too sharp. These are just tweeking suggestions, this is a good start...