Since the subject is presumably the sand, I'd like to see it more in focus. I'm not sure what the relationship is between the dog and the sands of time. A much simpler cloth (instead of the quilt) would have looked better, IMO.
Interesting composition. Perhaps a bit much going on with patterns of the quilt and the dog's crazy hairdo. Not sure I connect the hourglass to the dog. Is the dog old?
hmmm... I love animal shots, the yawning with the timer kind of creates a fun message, sand man image could be interpreted as well, but the image overall doesn't capture my attention