To me, your colors are too muted. I wish there was more saturation or maybe change this to b&w or sepia. Also, maybe if there was another element to add interest, that would also enhance interest in your photo.
It's kinda like those pictures where you're supposed to see a boat in all the little triangles. I could never see those! :oP Is there something invisible here? Or just a creative title :o) Great image. Leaves me coming back for more!