How it works
When you copy from a page, keep your eyes on the page and the screen. Your fingers know home, so they do not need watching.
Put a marker under the line you are copying: a ruler, a finger or a strip of paper. It holds your place.
Copy in small bites of three or four words. Say them in your head, then type them.
When a line is done, slide the marker down one line. At the end, check your page against the card.