Teaching Matthew independence starts with the little things - like wiping his own chin.
Matthew is generally neat and likes to be clean. But when eating, he doesn't usually sense if some food has strayed to his chin or cheek or nose. And when he does, it's not easy for him to pinpoint it's exact location. So we use a small acrylic mirror (won't shatter if dropped) to show him where he needs to wipe. It works flawlessly for my visual learner.
And it's quicker than just telling him verbally.
And it's a baby "I-do-it-myself" step.