Re: Do you show your own work to your students?
I believe there's a time and place for everything, and showing students our artwork is generally helpful and inspirational. My students seemed to enjoy seeing me work on art with them to help demonstrate a technique or demonstrate my approach to the medium/unit. They also enjoyed seeing finished personal artworks from time to time if it was relevant to the lesson. I think it also helps them see that every artist and artwork starts somewhere.
However, we also have to be careful not to show them work with the implication that they have to do exactly as we did, elsewise they become 'stuck' on the notion that their piece has to look like ours.
In short, yes, it's very helpful, but needs to be thought-out and done for a genuine reason.
"We all want progress, but if you're on the wrong road, progress means doing an about-turn and walking back to the right road; in that case, the man who turns back soonest is the most progressive." - C.S Lewis