Ok, so what I want is to have it so that when I create a new frame on the same layer, it automatically creates an onion skin of the previous frame but doesn't actually copy the previous drawing over.
IS there a way to do this? I am trying to make a short animation, drawing each frame myself, and it would make it a lot quicker. Thankyou for taking the time to read this.
When you turn on Onion Skin in the timeline you can drag the handles that appear in the timeline, and have any number of previous or next frames showing. Just have the right end on the current frame and the left end on the previous frame. It will move along with you as you scrub the timeline.
When you create that new frame, assuming it's a keyframe from what was already there, you'll get two frames that are looking the same, but as you modify the new frame the previous one will be more obvious.