Timmy added that 18 footer near the elbow at around Green's age. Jordan added his post-game at around Green's age. It can be done, and what we know about skill acquisition later in life (the brain actually remains nearly as plastic into adulthood as it was during childhood) and given how effective modern training methods are, I think Green could add a non-athletic skill to his game, like that in between jumper I always ramble about.