The attention rule of 10 to 15 min of separating every class related concept will be of a great help. 

First class impression makes a big impact on what the students can expect from the instructor and the class.

Being on time is a must and as instructor being ahead of time is crucial to help set up the environment, especially when going to a clinical site. It is important that your students see that you can guide them on a place that it is not familiar to them like the classroom. I think it will give them confidence in the instructor.

This a very interesting topic. As a clinical instructor, and knowing that the students are coming with a base knowledge in the subject, the biggest point to take away is to be seen as a model of professionalism.