Strategies for making a positive impression

What are some strategies for making a positive impression and performing successfully at your internship?
Which 2-3 strategies have you adopted thus far? Can you illustrate how you have demonstrated these strategies? Which 2-3 strategies could you improve on, moving forward?
What does it mean to demonstrate leadership skills in your place of employment? How might you be a leader and thus stand out in your internship experience?
How might you successfully use the experience or connections from your current internship to secure a next opportunity, be it an internship or full-time employment?