I'm already kind of mourning for the point in about six months time when the glue on the tape starts unsticking. I'd suggest painting them with a thin coat of half liquid PVA, half water, if you want them to last.
Otherwise, not bad. The best one is the kitten, because you've used the material to give it some interesting qualities that you couldn't have done with just, say, conventional papier mache.
Now, you've got to decide what you want to say with them!