Yep, it sounds reasonable. Yet if we look closer, most (if not all) theories are not truly falsifiable, since any discrepance between theory and experiment can be explained by some external assumptions being false. Was Newton's mechanics falsified with Uranus? The falsity was in the assumption of there not being other planets.
Can you falsify my theory that there's a cat behind you? Maybe some cats are invisible on Tuesdays. How can we check validity of any single proposition about the world? We always test the whole bunch of them, said Quine.