Composition: Good. Did you try cropping so the subject was slightly more central?
Technical: Great lighting.
Overall impression: Good shot with the tongue out! 7
Very soft focus, but for me, it doesn't hurt the shot much, because the eyes and eyelashes are in pretty good focus. The outer edges of the ears look almost like a painting.
I love those eyes of a cocker. They play on your emotions. What a tongue. Looks like a young puppy. Wish you had not cropped off the top of his head. To me that's all that ruined it. Still a nice photo, but could have been better. Nice focus. I love that his tongue is so sharp, but the rest of him looks soft. Great job.