To succeed, to triumph. Perfect outcome! To prevail at something you wanted to accomplish such as a recipe or project whether replicating something you've seen or bringing your imagination to reality!
Nailing it: Nailed it (Past Tense):
1. Accomplishing or completing some with the utmost amount of competence, style, talent etc.
2. Nailing it is hitting it on the head with perfection and your aim true.
3. In a debated or other verbal sparing you nail it when your opposing person acknowledges that he can see your
point.
Similar to: Knocked it right out of the park. Aced it.
Did you watch that audition on "Dancing with the Stars", they nailed it. That's why they got all 9's.
I took my final examstoday and I know I just nailed it!
That candidate is nailing it on the topic of health care over the other guy.
Short-hand for the word floccinaucinihilipilification, meaning the estimation of something as valueless (encountered mainly as an example of one of the longest words in the English language).