When you are attempting to draw a portrait of yourself make sure you start with a very light outline. You might think you know the proportions of your face pretty well but when you actually sit and take a closer look at the human face you will realise that the eyes are not as close to the head as you thought they were. In fact, the eyes are about halfway in between the crown of your head and your chin. When you are creating a self-portrait you must get the major features first drawn in lightly and create a foundation drawing so you can add in your various details and features later. If you follow this method you will be able to erase any mistakes affecting the detailing that you will create later.