1. A tighter crop of the subject would probably help, but overall I don't find this shot interesting. I feel like it should be interesting with the colorful umbrella and such, but it just doesn't grab me.
2. The colors are a bit flat, and since the cat isn't facing the camera it's hard to feel any kind of connection to it. Also since they're composed on opposite sides of the frame, they don't really appear to have any connection to each other. If you'd pulled back a little bit and left a little more space above and to one side of them, it may have served to show a relationship, and maybe tell a story.
3. I like the panning look, but I wish the subject wasn't centered.
4. This is probably your strongest shot of the bunch, but... well actually two butts is the "but." They both look like they're pulling their clothes out of their cracks, though I think they're just walking. I like the symmetry, I like the moment, but if it had been taken a fraction of a second before or after that, their arms would both have been in different positions. That's the kind of thing that happens when you shoot candids though. I think this one would end up in my trash can despite all the other things that make it sweet.
These are just my opinions, and I have my own issues I'm working on, but I think you show promise and just need to work at it more. Like me, you need to learn to put more thought in to a photo before you press the shutter button.