nice try,
the first one I am not sure I understand, the only dog hes every had was k9 and that sure doesnt look like him so whats the idea behind this?.
the others are good but they do have a photo shopped feel to them, as if they have been cut and pasted together. The characters, or tardis doesnt quite look right it doesnt fit with the background. I think this comes from the way the light or focus of them is different from the background they need to bee just as sharp or dull as the background and lit in the same way otherwise they wont look like they belong together