you have a very common problem found with adults also.when i see a buck,the size of his rack will instantly tell me if it is a shooter or not.after making tke decision to take him,i never look at his rack but instead begin to plan the shot and pick the opening or plan to stop him for the shot.i tell myself over and over to squeeze the trigger.in years past i would rush my shot and shoot over the top of his back by jerking the trigger.another common problem i have seen,is trying to count points or score the deer on the hoof causing the deer to move out of good shooting spot.