Hi Mike:
I have to agree that we demonstrate to our students how professionalism is manefested a little bit each day. By the end of the course, student observers will have learned better ways of presenting themselves.
Good classes just don't happne by accident - it takes time, effort, prepartion, and thoughtful planning. I think students recognize when a teacher has put in that time. "My teacher cares" is likely to be felt by students when they witness a class that really is together, runs smoothly, and all the resources are readily at hand.
Regards, Barry