Hi Annie,
Using articulation during your delivery is very important. It doesn't cost a thing to smile, I too smile alot with my students. Smiling lets the students know that you are personable, pleasant, perhaps nice, approachable, nonintimidating, etc. I have always focused on having excellent eye contact as well. Eye contact can let the students know that you are confident. It is nice when you can add practicallity to your courses--it is nothing like saying "been there done that" so to speak. I am sure students enjoy hearing your experiences as an artist and designer. You're right, your work… >>>