In truly traditional animation you don’t really have to align the frame like that, you already have your framing done, it’s the object that move inside the framing. And in digital it’s even easier since you have the onion mod.

Here I worked it like life drawing, so I had to do that to erased most the imperfections having a real fluidity, that makes most of the illusion with an higher frame rate. Like hiding the hand, the fact that hair are just squiggling line and no true worked hair having my character really solid on his foot