My labels do not line up

1. In the print window, untick any fit to page or scale option, so it prints at actual size.
2. Print the Test sheet on plain paper.
3. Hold it against a sheet of labels, up to the light.
4. Change Move across and Move down, half a millimetre at a time.
5. Print the test sheet again until the boxes sit on the labels.

Also check you chose the right Label sheet: Avery L4773 or Avery L7651.