cute puppy, but the focus is soft, the lighting is flat, tones are too gray and the overall composition is relatively dull. Don't take this too harshly, just go out and take more shots of him to work on your technique. I recommend shotting lots - I regret not having done that with my dog. He was so small for such a short time and now is a 90 lb monster.
//www.dpchallenge.com/forum.php?action=read&FORUM_THREAD_ID=45881 - this thread (the first post), if read in its entirety, should give you something to think about :)