ABSTRACT
Clean-up can be done on top of the original drawings or created on top of new sheets of animation paper that are laid over the originals. Clean-up can be done with a solid black pencil line, an ink line, or even a digital line created directly within the computer. One big danger of two-dimensional animation is that in getting carried away with the animation process, and especially when liberally using squash and stretch in the action, it is very easy to have inconsistent shapes, dimensions, and volumes from animation drawing to animation drawing. For example a common fault is that the lengths and widths of the calves or thighs tend to change shape in length and volume from frame to frame with the work of an inexperienced animator. Clean-up artists often started their process by using a dark pencil to structure everything. These clean-up pencil drawings were then inked onto clear acetate cells, after which they were painted and shot.
