What a cute little guy =)
For CC, in the first two as well as the last....he's dead center in the middle of the frame...so I would try to work on composition a bit. Also, watch for horizon lines going right through heads, and for limb chopping. (3 and 4.) Color and exposure are pretty good, maybe a bit yellow in the third shot. I Like the depth of field you chose in all but the last one. Since the bubbles are part of the "story" of these shots, I would like for them to be more in focus than they are. So I would have stepped way back or zoomed out to get them in the plane of focus as well. (They're close up to the camera, which puts them too close to be in focus at the aperture you chose.)
Thanks for sharing =)