Finishing well
It's not enough to finish the checklist, to hurriedly do the last three steps and declare victory.
In fact, the last coat of polish and the unhurried delivery of worthwhile work is valued all out of proportion to the total amount of effort you put into the project.
It doesn't matter how many designers, supply chains, workers, materials and factories were involved–if the box is improperly sealed, that's how you will be judged.