In this thread Arati made an observation about flamingos leaving the frame not working very well with the composition which I too felt when I processed the image.
However, we routinely have habit of "making sure" our subject always entering the frame. I think we are missing out on effective compositions here !! While the flamingos image there was an unplanned composition, here are some which are explicitly composed that way (leaving the frame). To me it gives a subtle mood to the image - the mood of leaving, mood of the return, the mood of i have promises to keep and miles to go.. and other unquantifiable feelings.
Would love to know your thoughts..