You can use the Onion Skin feature to align objects on a frame based on previous frames. This is useful if you are animating a shape or character you have created or your camera position changed while taking your pictures. Click a frame in the Storyboard or Timeline.
Click and drag objects to align the current frame with the previous frame.
You can see up to 10 previous frames at once.
Type the number of frames you want to see in the Onion Skin frame box.