I really like how you seem to have made the old man's face blend right in to the harmonica. Very nice.
The focus in the dog photo is on his nose. Try focusing on eyeballs instead. It's typically unsettling when eyes are not the focal point.
The third photo is really cool, except that it would have been much better had her fingertip been the focal point. I know, same kind of critique as last time, but I think it would have really helped. The finger itself is the primary subject, not the letters.