I can understand that, but really there is no substitute for actually going out and taking more photos, any photos! You learn more by shooting lots of images, than by working in PP on rubbish images.
So I thought I'd try something with my dog, by way of demonstration. Just to make it different, I combined it with the end of the festive season tree dumping. This shot, the best of three, is an unprocessed raw image exported out of LR with no processing at all. Of course it may possibly be improved by tweaking sliders in LR, but it doesn't need cropping or vignetting, IMO.
It's by no means a wonderful photo and I won't be entering it for any prizes, but I hope it shows that you don't need a lot imagination to think up something a little better than a shot of the dog on its own. BTW she was most reluctant to park her arse on freezing wet grass, so I couldn't hang about. Therefore with pets you need to be prepared as far as the camera settings are concerned, as they're not going to be obliging and wait for you.
Don't get stuck behind a keyboard; go out and shoot and have fun thinking up angles and compositions!