The first step in a really excellent Happy Dance is having something to be excited about.
This is my brother.
They are having a baby! And I am going to Alaska to help them when the baby is born, mostly to help take care of their daughter, the most adorable girl in the world.
I'll be flying to Alaska to stay with them for 10 days. Almost everyone in my family has been to Alaska except for me (and my sister) and I'm excited just to go. Another perk is that my they are paying for my ticket with their sky miles. Hooray! Trip to Alaska! Free trip to Alaska! Hanging out with my brother, sister-in-law and niece! Being the first in my family to meet my new nephew!
See? Something to be happy about!
There is something else that makes the difference between a mediocre Happy Dance and a great Happy Dance - a chant. The chant should be short and rhythmic.
"I'm goin' to Ala-ska! I'm goin' to Ala-ska!"
Once you have something to be excited about, and a chant to go with it, it's time to learn the moves. Have a look at the following diagram.