If he's left eye dominant. Get him shooting guns and bows lefty. It will be more natural for him. As he's just starting. It will be much easier in the long run if he does everything through the left eye. This way he dont have to switch back and forth between guns, bows, and any thing else from left to right eye. Thats the way we teach young archers just getting into the sport. May seem alittle wiered at first for them. but w/ practice they will pick it up soon!!! Good luck !!!!