Henry Henry Henry!

Henry and I have been working on the command “stay”. Sometimes he does it really well, and I can walk up and down the stairs and into the kitchen and come back and he is right where I left him. Other times he gets really confused and starts going through all his tricks like some sort of broken wind-up toy, which is kind of funny. We’re also working on “roll over” as sort of an extension of “Bang! Bang!”
So far Henry can sit, lay down and come for his basic tricks. He can also “Stick ‘em up”, which means he stands on his back legs with his front paws above his head. Sometimes the sheriff shoots him anyway, and “Bang! Bang!”, he rolls over on his back and stick his paws up in the air. He can also “dance” which means he stands on his hind legs and spins in a circle. Finally, he waves hello. If you say “Hello, Henry!” and wave at him like you are a toddler, he waves his left paw. It is pretty cute.
After mastering roll over, I am thinking about teaching him to walk on command on his hind legs (he already does it sometimes on his own), to jump through a hula hoop, and to army crawl. As you can see, I am very concerned about the practical application of the commands I am teaching Henry.
Feel free to make any suggestions.