I always prepare each online lesson according to the needs of the student. After a brief assessment of what the student needs and wants I usually email the lesson documents to the student 24 hours in advance so he or she has the opportunity to print them off and/or have them to hand during the lesson (as opposed to onscreen) and to help with later revision. All the PowerPoints I make and use I also send out to the student once I have presented them in context along with a vocab list of any words or expressions used in the lesson that came up. Again a very useful revision tool.
Learning a foreign language should be fun. Of course there should be some kind of goal , (academic or otherwise) in sight, but it doesn't have to be a hard slog. I have a light and breezy presentation style and encourage as much student focussed learning as can be possible in an online learning environment. I'm especially good at teaching International Language testing formats as there are a lot of hidden tricks and techniques to passing these exams that the student working independently with books might not pick up on.