Teaching someone to bowhunt is easy providing the teacher doesn't impose unrealistic restrictions or make the student use unfit equipment. One common fault is that youngsters usually use arrows that are too long for them.
Proper form is most important.
Proper stance, proper bow positioning, solid anchor point and a quality caliper release will make accurate shooting easier. Youngsters should pull low-poundage bows and increase draw weight as their skill and strength increases. A 30-pound bow with sharp broadheads will kill a deer, providing the youngster places the arrow properly. This only comes through practice. Coach youngsters to pick a spot on the deer and shoot at that spot behind the front shoulder.