Dinner is not done once everyone has eaten. Dinner is done once the dishes are washed and the kitchen is cleaned.
The yard is not done when the grass has been cut. The yard is done once the cuttings have been dumped in the compost and the mower put back in the shed.
A deck is not done when the boards are laid and railings installed. The deck is done once the sawdust is swept up and the tools put away.
In fact, just about any project or task has some amount of cleanup afterwords. No task or project should ever be considered complete without doing so. In fact, when breaking a project down to its various steps, cleanup should always be at the end of that list.
Cleanup. Then, done.