This fellow seems quite tense and determined. You make him seem even more so by leaving that tiny sliver of space between the window and the elbow, and catch him with one foot off the ground. A well composed image, sealed within a split second of time.
You manage to capture cultural values in a single gesture. This postman is obviously very prideful in his job with his jaunty posture and crisp pressed uniform. He belongs to the severe architecture of window, door and stair rail. The only sensuous touch is the bountiful petunia planter and fallen blossoms.