Running tests and dealing with defects is as much art as science. Think about what you'll do for your next project. Brainstorm answers to these questions with your team.
How will you educate the customer about what will happen during the project?
Who will execute acceptance tests?
Who will automate acceptance tests?
How will you report and track defects?
How will you handle fixing defects?
How will you get customer signoff on the iteration?