<-- majored in Chinese history, studied Mandarin for 5 years.
Dede is not little brother, that's Didi.
Gege (pronounced like gerh gerh) = older brother
Didi (dee-dee) = younger brother
Jiejie (jee-air jee-air but said very fast so the r is almost unspoken) = older sister
Meimei (may-may) =...
I agree with AliceShiki. Every writer's process is different, and outlining doesn't automatically make a great story. So if you care about your story, that is likely enough to make it good.
But here's another secret people don't seem to be saying.... write your story. And there's your outline...