When sharpening a knife on a whetstone, it is generally recommended to push the knife away from you along the length of the stone. This means that the knife should be positioned with the blade facing away from your body, and you should apply gentle pressure with your hand to push the knife forward along the whetstone. This technique helps to ensure that the edge of the blade stays in contact with the stone, which is necessary for achieving a sharp edge. It also allows you to use your dominant hand to apply the necessary pressure, which can make the sharpening process more comfortable and efficient.