Good luck!!! I'm good at trick training, but TERRIBLE at leash training, so if you've got questions. Here's Uni's vid when she was 4 months old.
If you check out my profile page, you can see her most recent vid. Now she is doing it without hand signals, just voice commands. BUT understand that at each and every meal is trick training time, and she does not get treats, only on the rare occasion. Trick training every day 2x a day, even if she already knows the tricks, she still do it.