To maximize efficiency as an instructor, you must also become readily familiar with the teaching software used. 

Instructors have to be creative in how they deliver education so as to utilize or incorporate all the different learning styles. 

It's helpful to the overall success of the student to create an environment that is not stiff and rigid to optimize their learning, to interact with the students after you have shared something about yourself professionally and after the students have shared about themselves as well. Also, allowing students to test their knowledge so that you can better prepare to focus on areas that need more instruction. 

I think organization is a huge part of teaching efficiency. This is why the syllabus, curriculum outline and setting goals are so important to how well the students do and how well you deliver information as an instructor. 

It's important to be passionate about the content of what is being taught... it breeds excitement for the course of study which ultimately benefits the student. Leading by example by being on time, neatly dressed, are also elements of teaching that have an impact that is too often forgotten.