Successful students turn in assignments that look neat and sharp. They take the time to produce a final product that looks good, a reflection of a caring attitude and pride in their work. They are polite and graceful in the discussions, even if they are a little bored sometimes. They try to learn something every day, from their classmates or from the Internet. Almost all work and assignments are turned in, even if every one of them is not brilliant.
Successful students seem driven to complete all work.
The most successful students may well end up at the instructor's office door at least once during the semester. They'll go out of their way to find the instructor and engage in meaningful conversation.