Teaching techniques?

I have been asking questions regarding presentation skills and now I have the new role of a teacher. I am to start teaching soon. For now, I will teach engineering graphics / drawing to first year engineering students.

I request all teachers and non-teachers alike to share their experiences and offer any advice. Please advise for both short and long run.

I have some experience in delivering presentations in organizational settings, but teaching may need some extra skills. Tips?

Suggestions are also appreciated.