Popcorn's Tricks

So, I am wanting to teach Popcorn to do some tricks. We just need to perfect them by November when Sheldon comes home. I want him to be really impressed. Popcorn is getting really good at fetch. I want him to learn to shake, but we have not started that yet. My dad has been trying to teach him how to sit. Popcorn has not been cooperating. We will just have to work harder.