To demonstrate how to teach Simba the great advice you've received, here's a great video. You can use a marker word (eg, "yes" "good" "right on" etc.) and reward with whatever Simba values. Just remember to withdraw the rewards after each step once he's mastered them. I like the idea that he gets to clean up once meal time is over and everyone is away from the table.
http://www.youtube.com/watch?v=PQzXdAA3vk8
Now, do we get updated pics of Simba
?