These are fun! I like the simplicity of all of these. The first one looks like it could easily be in The New Yorker. I think for the second one you need someone looking/pointing up in terror or a dog chasing it or something... maybe the shadow shows a person clutched in it's claws. For the third one, it might be cool to frame it with a photo style frame/border (polaroid?) to drive home the idea that they are posing for a photo. They are posing, right? Might be fun to do a sequence here. Either way, this is a great "moment before" image. The image here is crystal clear and I love the dog's expression.