Do not finish until you are finished

It is easy to consider the outputs of a process as finished, when that may not be the case.
It is important to confirm it is before designing your outputs.
It would be rather difficult for example if you finish a document and export it as a PDF only for the next process to have to deconstruct this to add details to the same document.
Conversely, if the next process involves sending out a document it may be preferable that your process does save it as a PDF as this may save time, license fees and complexity across the organisation.
This could also apply to any number of things. Packaging an item disproportionately to its journey, saving as an Excel document rather than a CSV or even completing a final check before the final changes are made.