This is a nice example of a narrow depth of field (F 4.5) but I want to see the entire bridge rail in focus (F22 and set your focal point 1/3 of the way down the rail).
Nice broad depth of field. I might crop out the dark tree trunk on the left and include the complete arc of the bridge along the top edge.
This is a better depth of field example. Do you know what your F-stop was on this image? Ideally you would set your focus just in front of the mushroom if you wanted to include the background elements...
