First and foremost, you ought to make sure that you prepare the online class as well as you can. This means that you need to transform some of your class material because not all fits in an online course. You do not want to bore your audience with uninspiring educational material when you can adjust your resources to the contemporary needs of your students.
Another thing that you ought to focus on is the ongoing communication and frequent feedback as to the progress of each student. You must be kept approachable, as this is the backbone of how to sell a training service. With feedback and notes on progress, every student is able to see how he performs in the class. As a result, students will know if they are doing OK and if they can do anything to improve over time.
You need to assign projects and exercises to the students, obliging them to complete them and send them over for evaluation. If you do not stress out the mandatory character of these assignments, chances are that not many students will actually complete them. Keep in mind, though, that more time is needed for online assignments to complete than it would in a regular course.
Motivate your students and be strict as to deadlines. Online classes can either turn to be tedious or chaotic, in terms of deadlines. Make use of the timeline you have set on your mind at the beginning of the class and stick to it. Let your students know in advance when their assignments are due and when they will take their final tests. Offer them motivation and increase collaboration among them.