This is just awesome.
I cannot find anything displeasing, as everything fits into place : The marks on the door, the open letters that give the funny impression that the dog has read them and found that they are not the one he is waiting for, the dust particles floating in the air that tell us how long he has been waiting here, and, most of all, I love the dog's stance, as he is just sitting there, waiting, and waiting, and waiting.
This is simply excellent, and the DD is deserved.
I find this so very poignant for some reason! Your lighting and palette are so beautiful and controlled and really create a forlorn effect... like it's now time for their human to come home and they've been waiting a long while. I adore the way the flecks of dust catch the light and shine. This is such a thoughtful and thoroughly well-thought out composition