Always use TINY treats for training (kibbles, or break up milk bones). Making your dog overweight causes health problems, so think small. A tiny bite is reward to them & takes less time to chew.
Use the same VERBAL command while physically showing the dog what you want.
I said "Play the Piano" every time I placed her paw on the keys... Then immediately followed with a treat & praise. Dogs love to please us.
She loved the treat, attention & praise & after about 12 times showing her, she'd do it on command! LOTS of PRAISE plus a treat was all she wanted. She learned in the first day.
Use the verbal command every time and be ready to reward her immediately.
Food rewards give dogs incentive to please you & aids training! Dogs ALSO need & love PRAISE! Once they learn a trick, you can alternate between a treat & a petting. Always use verbal praise!
Now your dog can entertain your guests!
Now that she knows this trick so well, she'll even do it when I don't ask her, then look at me, after which I praise her and pet her and she is so happy to get that!