You didn't do too bad IMHO. In fact, I think #3 is excellent. The foreground cat is very sharp and the out of focus cat behind has that interesting rim lighting around it - very cool image, and very good exposure on all of them.
On many of the other shots, I don't really care for the composition, with a lot of empty space around the subject, but that space is not really used to convey anything to me. For instance, I'd like #1 more if you cropped off the top 2/3 of the frame. Consider using the "landscape" / horizontal orientation of the camera so you don't have all that empty space above and below your subject (unless that's what you want - in which case please ignore me!)
It's interesting how much variety we have on the board. You could hand me a great flash set up and I'd sort of look at it funny and ask if I could just have a faster lens or a tripod. I really need to learn about flash someday. Maybe later

.