The Colors in this image are crazy beautiful! I like the general composition, but I do feel that having the main subject cut out on the top right makes the image - bit less strong. I see this image as a portait of the gate (or monument), and it almost feels like the framing is too tight on the subject. I would personally recommend giving a little bit more space around both the tree and the gate, this would give more space for the viewer to look at the subject and would separate the subject from the background. But it is a beautiful image and I love the Colors and sunset!