Aim for the neck to arrive at the chest. Since your ball will lose momentum during your pass, where you aim your pass on your teammate is not where is will land. Aim a little higher to where you want the ball to arrive. Aim for the head to arrive at the chest is important because if the ball hits their chest your teammate can shoot faster. If you aim for their chest and it arrives at their waist, then it will take longer for them to prepare for their shot. In game time, that extra half a second that it will take to bring the ball up from a bad pass could be the difference in whether your teammate could get the shot off or not.
If you really want to learn about passing fundamentals, attend a summer basketball camp!