The last 2 Heisman trophy winners have been Freshman. Basic QB skills should be there by the time you're a sophmore. If Taysom isn't accurate yet, he's not going to learn how to be accurate. Improvement at this point in his career will come by learning how to read defenses, how to change plays, how to go through progressions, etc. We should expect improvement in the mental parts of his game, but Taysom isn't going to improve much in the physical aspects of the game.